Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? Guide Complet pour Comprendre | DYNSEO<\/title><br \/>\n <meta name=\"description\" content=\"D\u00e9couvrez les diff\u00e9rences essentielles entre Alzheimer et d\u00e9mence. 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{\n p, li { text-align: left !important; word-spacing: normal !important; hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; }\n .container { padding: 12px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<p><\/head><br \/>\n<body><\/p>\n<section class=\"article-hero\">\n<div class=\"article-hero-inner\">\n<nav class=\"article-breadcrumb\">\n <a href=\"https:\/\/www.dynseo.com\/en\/\">Home<\/a> ><br \/>\n <a href=\"https:\/\/www.dynseo.com\/blog\">Blog<\/a> ><br \/>\n <span>Alzheimer vs Dementia<\/span><br \/>\n <\/nav>\n<p> <span class=\"article-category\">Understand & Inform<\/span><\/p>\n<h1>Alzheimer or Dementia: <span class=\"hl\">What Difference?<\/span> Complete Guide to Understanding<\/h1>\n<div class=\"article-meta\">\n <span>\ud83d\udcc5 April 2026<\/span><br \/>\n <span>\u23f1\ufe0f 15 min read<\/span><br \/>\n <span>\ud83d\udc65 Families & Professionals<\/span><br \/>\n <span class=\"stars\">\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n<\/p><\/div>\n<div class=\"article-hero-curve\"><\/div>\n<\/section>\n<div class=\"article-body\">\n<div class=\"container\">\n<div class=\"intro-block\">\n <pee>The terms \u201cAlzheimer\u201d and \u201cdementia\u201d are often used interchangeably in our daily lives, creating persistent confusion. However, understanding their difference is not just a simple semantic exercise: it is an essential key to obtaining the correct diagnosis, accessing appropriate treatments, and better supporting a loved one. Alzheimer’s disease is certainly the most common form of dementia, but it is only one cause among others. This fundamental distinction directly influences management, progression, and improvement prospects. In this comprehensive guide, we clearly explain this complex relationship, the different forms of dementia, their biological mechanisms, and their concrete implications for patients and their families.<\/pee>\n <\/div>\n<div class=\"stats-grid\">\n<div class=\"stat-card\">\n <span class=\"number\">60-70%<\/span><\/p>\n<div class=\"label\">Of dementia cases are attributable to Alzheimer’s disease<\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n <span class=\"number\">55M<\/span><\/p>\n<div class=\"label\">People affected by dementia worldwide (WHO, 2023)<\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n <span class=\"number\">200+<\/span><\/p>\n<div class=\"label\">Diseases and conditions that can cause a dementia syndrome<\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n <span class=\"number\">1M<\/span><\/p>\n<div class=\"label\">People affected by dementia in France<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<h2>1. Dementia: a syndrome, not a disease<\/h2>\n<pee>The first thing to understand is that dementia is not a disease in itself, but a syndrome \u2014 that is, a set of symptoms that can have multiple causes. The official medical term, preferred today in the scientific literature, is major neurocognitive disorder (according to the DSM-5, the Diagnostic and Statistical Manual of Mental Disorders). But the word \u201cdementia\u201d remains widely used in clinical practice and among the general public.<\/pee>\n<pee>For a dementia syndrome to be diagnosed, three conditions must be met: a significant cognitive decline compared to the previous level, in at least one area (memory, language, attention, praxis, executive functions, perception); this decline must be severe enough to interfere with daily activities and autonomy; and it must not be better explained by another disorder (depression, delirium, medication effect).<\/pee>\n<pee>Dementia can affect different cognitive functions depending on the underlying cause and the brain regions affected. The main areas involved are memory (especially episodic memory \u2014 memories of lived events), language (finding words, understanding, naming objects), executive functions (planning, organizing, solving problems), praxis (coordinating complex gestures), visuospatial functions (navigating in space), and social cognition (recognizing emotions, understanding social situations).<\/pee>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">\ud83d\udca1 Expert Point<\/div>\n<div class=\"expert-box-title\">The fundamental distinction in clinical neurology<\/div>\n<pee>\u201cDementia is a clinical syndrome. Alzheimer’s disease is a specific neuropathological disease. One is a container, the other is a content among others.\u201d This distinction, although technical, has major practical implications for diagnosis and management.<\/pee>\n <\/div>\n<h2>2. Alzheimer’s disease: the most common cause<\/h2>\n<pee>Alzheimer’s disease is a specific neurodegenerative disease, characterized by precise and progressive brain lesions. It accounts for between 60 and 70% of all dementia cases, which explains the frequent confusion between the two terms. However, while every Alzheimer’s disease leads to dementia in its advanced stage, not every dementia is Alzheimer’s disease.<\/pee>\n<pee>From a neuropathological perspective, Alzheimer’s disease is defined by two types of characteristic lesions, highlighted by Alo\u00efs Alzheimer himself in 1906. These lesions spread according to a relatively predictable anatomical pattern \u2014 described by Braak stages \u2014 starting with the hippocampus and entorhinal regions (hence the early impairment of episodic memory), and then gradually extending to the entire cortex.<\/pee>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd2c The two biological markers of Alzheimer’s disease<\/div>\n<pee><strong>Amyloid plaques (or senile plaques):<\/strong> extracellular deposits of beta-amyloid protein fragments that accumulate in the spaces between neurons. They disrupt synaptic communication and induce a local inflammatory reaction. These plaques appear many years \u2014 sometimes decades \u2014 before the first clinical symptoms.<\/pee>\n <pee><strong>Neurofibrillary tangles:<\/strong> intracellular accumulations of abnormally phosphorylated tau protein that form twisted filaments inside neurons. They disrupt the transport of nutrients and signals within the neuron, leading to its progressive death.<\/pee>\n <\/div>\n<pee>Alzheimer’s disease typically progresses through several phases. A silent preclinical phase, which can last 15 to 20 years, during which lesions accumulate without causing noticeable symptoms. A prodromal phase (or MCI \u2014 Mild Cognitive Impairment \u2014 amnesic), characterized by noticeable episodic memory disorders but without significant impact on autonomy. Then the phase of established dementia, mild, moderate, and then severe, with an increasing impact on daily living activities and autonomy.<\/pee>\n<h2>3. Other forms of dementia: beyond Alzheimer’s<\/h2>\n<pee>Alzheimer’s disease is the most well-known, but other conditions can cause a dementia syndrome, with different cognitive profiles, progressions, and management approaches. Knowing them allows for a better understanding of diagnoses and adapting support.<\/pee>\n<h3>Vascular dementia (15-20% of cases)<\/h3>\n<pee>Vascular dementia is caused by brain lesions of vascular origin: cerebral infarctions (Stroke), multiple micro-infarctions (leukoaraiosis), or chronic cerebral perfusion disorders. Unlike Alzheimer’s disease, its progression is often stair-stepped \u2014 worsening in stages after each new vascular episode \u2014 rather than gradual and continuous.<\/pee>\n<pee>Executive functions and processing speed are often more affected than episodic memory at the onset. Vascular risk factors (hypertension, diabetes, atrial fibrillation) are the main preventive levers. Management largely relies on controlling these cardiovascular risk factors.<\/pee>\n<h3>Lewy body dementia (10-15% of cases)<\/h3>\n<pee>Lewy body dementia is characterized by abnormal deposits of alpha-synuclein protein (the “Lewy bodies”) in neurons. It presents a distinct clinical profile with significant fluctuations in cognitive performance (sometimes from one day to the next), early and recurrent visual hallucinations, a parkinsonian syndrome (slowness, rigidity, balance disorders), and a particular sensitivity to certain neuroleptics that can be dangerous for these patients.<\/pee>\n<pee>Dementia associated with Parkinson’s disease shares similar mechanisms. These forms require specialized management, particularly due to specific medication risks.<\/pee>\n<h3>Frontotemporal dementia (5-10% of cases)<\/h3>\n<pee>Frontotemporal dementia (FTD) is a degeneration of the frontal and temporal lobes of the brain. It typically affects younger people (between 45 and 65 years old) than other dementias. Its profile is characteristic: changes in personality and behavior (disinhibition, apathy, socially inappropriate behaviors) or language disorders (primary progressive aphasia) dominate the clinical picture, while episodic memory is preserved for a long time.<\/pee>\n<pee>This atypical profile can delay diagnosis, with families often consulting first for psychiatric or relational disorders before the neurological nature is recognized.<\/pee>\n<div class=\"comparison-table\">\n<table>\n<thead>\n<tr>\n<th>Type of dementia<\/th>\n<th>Frequency<\/th>\n<th>Dominant early symptoms<\/th>\n<th>Evolution<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Alzheimer’s disease<\/td>\n<td>60-70 %<\/td>\n<td>Episodic memory (recent forgetfulness)<\/td>\n<td>Progressive and continuous<\/td>\n<\/tr>\n<tr>\n<td>Vascular dementia<\/td>\n<td>15-20 %<\/td>\n<td>Executive functions, slowness<\/td>\n<td>In stages (Stroke)<\/td>\n<\/tr>\n<tr>\n<td>Lewy body<\/td>\n<td>10-15 %<\/td>\n<td>Hallucinations, fluctuations, parkinsonism<\/td>\n<td>Progressive with fluctuations<\/td>\n<\/tr>\n<tr>\n<td>Fronto-temporal<\/td>\n<td>5-10 %<\/td>\n<td>Behavior, personality, language<\/td>\n<td>Progressive (faster)<\/td>\n<\/tr>\n<tr>\n<td>Mixed forms<\/td>\n<td>10-20 %<\/td>\n<td>Variable depending on components<\/td>\n<td>Progressive<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h2>4. Mixed forms and reversible dementias<\/h2>\n<pee>It is common, especially among very elderly people, to find mixed forms combining Alzheimer’s lesions and vascular lesions. These mixed forms represent a significant proportion of dementias in old age and sometimes complicate the establishment of a precise etiological diagnosis.<\/pee>\n<pee>Moreover, some causes of cognitive syndrome are potentially reversible: hypothyroidism, vitamin B12 deficiency, severe depression (depressive pseudo-dementia), normal pressure hydrocephalus, iatrogenic effects of certain medications, infections, electrolyte imbalances. This is why a complete biological and clinical assessment is essential before any diagnosis of neurodegenerative dementia \u2014 to avoid missing a treatable cause.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">\u26a0\ufe0f Attention<\/div>\n<h4>Do not confuse with normal aging<\/h4>\n<pee>Forgetting where one has put their keys is common at any age. What distinguishes normal aging from dementia is the severity, progression, and impact on daily life. In normal cognitive aging, it may take longer to find a word or information, but one eventually succeeds. In dementia, forgetfulness progressively worsens and genuinely interferes with usual activities. A persistent doubt deserves a professional evaluation.<\/pee>\n <\/div>\n<h2>5. How do we distinguish between different dementias?<\/h2>\n<pee>The differential diagnosis of dementias \u2014 that is, distinguishing which form of dementia is involved \u2014 is one of the most complex tasks in neurology and geriatrics. It relies on several complementary steps that require specialized expertise and sophisticated diagnostic tools.<\/pee>\n<pee>The diagnostic evaluation of dementia typically includes a thorough clinical interview (medical history, symptom history, medical and family history), a neuropsychological assessment that objectively characterizes the profile of cognitive impairments (memory, language, attention, executive functions, praxis), a biological assessment (to rule out treatable causes), brain imaging (mainly MRI, sometimes PET scan) allowing visualization of regional atrophies, vascular lesions, or amyloid deposits, and sometimes an analysis of cerebrospinal fluid (Alzheimer’s biomarkers: beta-amyloid, tau, phospho-tau) or genetic tests in familial forms.<\/pee>\n<h3>The role of neuropsychological evaluation<\/h3>\n<pee>The neuropsychological evaluation is central to the diagnosis of dementias. It not only confirms the existence of cognitive decline and measures its severity but also characterizes the profile of impairments \u2014 which significantly guides the etiological diagnosis. An early and predominant impairment of episodic memory (with gradual forgetfulness) is characteristic of Alzheimer’s disease. Predominant executive and attentional disorders point towards vascular dementia. Behavioral and language disorders with relatively preserved memory suggest frontotemporal dementia.<\/pee>\n<pee>This evaluation, conducted by a specialized neuropsychologist, includes a battery of standardized tests systematically exploring all cognitive domains. It often constitutes the key element of the differential diagnosis and allows for monitoring changes over time.<\/pee>\n<div class=\"conseil-card\">\n<h4>\ud83d\udea6 The DYNSEO Alert Signals Card<\/h4>\n<pee>The DYNSEO Alert Signals Card is a practical tool designed to help families and professionals quickly identify behaviors and cognitive difficulties that warrant a medical evaluation. It allows for structuring the observation of symptoms without alarmism, so as not to miss a valuable intervention window. Consult it before any medical appointment to best prepare for the discussion with professionals.<\/pee>\n <\/div>\n<h2>6. Alzheimer’s disease and dementia: key differences to remember<\/h2>\n<pee>For a clear understanding, let\u2019s summarize the essential distinctions between Alzheimer’s disease and dementia. These nuances, although seemingly technical, have major practical implications for patients, families, and healthcare professionals.<\/pee>\n<div class=\"key-points\">\n<h4>\ud83d\udccc The relationship between dementia and Alzheimer’s disease in 5 key points<\/h4>\n<ul>\n<li><strong>Dementia is a syndrome, Alzheimer’s is a disease.<\/strong> Dementia refers to a set of severe cognitive symptoms; Alzheimer’s is one of the diseases that can cause this syndrome.<\/li>\n<li><strong>Alzheimer’s is the most common cause of dementia (60-70%), but not the only one.<\/strong> Vascular dementias, Lewy body dementia, frontotemporal dementias, and mixed dementias represent other significant cases.<\/li>\n<li><strong>Not every Alzheimer’s disease necessarily leads to dementia from the start.<\/strong> There are preclinical and prodromal phases (MCI) before the stage of actual dementia.<\/li>\n<li><strong>The precise etiological diagnosis is crucial.<\/strong> It conditions the management, available treatments, and prognosis. Some effective medications in Alzheimer’s are contraindicated in Lewy body dementia.<\/li>\n<li><strong>The confusion between the two terms can delay diagnosis.<\/strong> Atypical symptoms (behavioral, language, early motor) should guide towards other etiologies than just Alzheimer’s disease.<\/li>\n<\/ul><\/div>\n<pee>This distinction also has important implications for medical research and the development of new treatments. Clinical trials are generally specific to a particular etiology, and the biomarkers used for monitoring differ according to the forms of dementia.<\/pee>\n<h2>7. Alzheimer’s disease in detail: symptoms and progression<\/h2>\n<pee>Since Alzheimer’s disease accounts for the majority of dementia cases, it is useful to describe its clinical picture and typical progression more precisely. This knowledge helps families better understand what lies ahead and to adapt their support.<\/pee>\n<pee>Alzheimer’s disease typically progresses in three main stages, with duration varying considerably from person to person (on average 8 to 10 years between diagnosis and death, but with significant variations from 3 to 20 years depending on the age of onset, general condition, and access to care).<\/pee>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Mild stage (beginning of the disease)<\/div>\n<pee>Forgetting mainly concerns recent events: conversations from the day before, appointments, names of recently met people. The person may get lost in unfamiliar places. They may have difficulty finding their words (word-finding difficulties). They remain autonomous for most daily activities but may need help with complex tasks (financial management, planning). They are often aware of their difficulties, which can lead to anxiety and reactive depression.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Moderate stage<\/div>\n<pee>Forgetting extends to older events. Difficulties with temporal-spatial orientation appear (not knowing the date, getting lost in familiar places). Language becomes simplified. Behavioral issues may arise: agitation, wandering, sleep disturbances, sometimes hallucinations. Dependence for daily activities increases (dressing, hygiene, meals). The burden on the primary caregiver becomes significant.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Severe stage<\/div>\n<pee>Verbal communication becomes very limited. Recognition of loved ones may be lost. The person becomes completely dependent for all care. Physical complications arise (swallowing difficulties, infections, immobilization). Psychological and emotional life remains present even at this advanced stage: touch, music, familiar voice, positive emotions can still be felt and communicated.<\/pee>\n <\/div>\n<pee>It is crucial to understand that this evolution is not linear and that many factors can influence it: cognitive and social stimulation, physical activity, quality of support, management of associated disorders (depression, agitation), medical comorbidities.<\/pee>\n<h2>8. Support and cognitive stimulation: adapt to the cause<\/h2>\n<pee>A precise understanding of the etiological diagnosis is not just academic: it has direct implications for support and cognitive stimulation. Each form of dementia requires specific approaches to optimize the effectiveness of non-drug interventions.<\/pee>\n<pee>In Alzheimer’s disease, cognitive stimulation is one of the best-documented non-drug interventions to maintain functional abilities and quality of life. It leverages long-preserved memories (implicit memory, procedural memory, emotional memory) to maintain engagement, pleasure, and self-esteem. The most effective activities are those that are individualized, regular, adapted to the current cognitive level, and that preserve a sense of competence.<\/pee>\n<div class=\"cta-box\">\n<h3>\ud83e\udde9 COCO THINKS and COCO MOVES \u2014 DYNSEO specialized applications<\/h3>\n<pee>COCO THINKS and COCO MOVES are cognitive stimulation applications developed by DYNSEO specifically for people with cognitive disorders and their caregivers. Their adapted interface, progressive exercises, and holistic approach (cognitive + physical) make them reference tools for daily support.<\/pee>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Discover COCO<\/a>\n <\/div>\n<\/p><\/div>\n<pee>In vascular dementias, the focus will be on executive and attentional functions, with exercises in planning, organization, and processing speed. In Lewy body dementias, significant fluctuations must be taken into account and the pace of sessions adapted. In frontotemporal dementias, behavioral disorders will require specific approaches in collaboration with specialized teams.<\/pee>\n<h3>Coordination of care and personalized follow-up<\/h3>\n<pee>When several professionals (speech therapist, psychomotor therapist, occupational therapist, nursing assistant) and the family are involved with the same person, the coordination and follow-up of stimulation activities are essential to ensure consistency and adjust approaches. A shared follow-up notebook allows for documenting stimulation sessions, observing the evolution of abilities, and facilitating communication among the various stakeholders.<\/pee>\n<pee>This coordination is particularly important because the effects of cognitive stimulation are cumulative and require regularity and a coherent progression to be optimal.<\/pee>\n<h2>9. What families need to know<\/h2>\n<pee>For the relatives of a person with dementia, understanding the diagnosis is often a painful but necessary step. Several essential points can help families better cope with this ordeal and optimize the support of their loved one.<\/pee>\n<div class=\"key-points\">\n<h4>\ud83d\udc99 Essential points for families<\/h4>\n<ul>\n<li><strong>The person remains a person.<\/strong> Even with severe dementia, the identity, emotions, preferences, and dignity of the person persist. Non-verbal communication remains possible and emotional bonds retain their importance.<\/li>\n<li><strong>Predictability helps.<\/strong> Stable routines, familiar environments, and clear time markers reduce anxiety and behavioral disorders. Organizing daily life becomes a therapeutic tool.<\/li>\n<li><strong>The caregiver needs support.<\/strong> Caregiver burnout is real and common. Respite time, psychological support, and support groups are essential to maintain the quality of care.<\/li>\n<li><strong>Early diagnosis changes everything.<\/strong> The earlier the diagnosis is made, the sooner measures can be implemented to maintain quality of life and plan for the future under the best conditions.<\/li>\n<\/ul><\/div>\n<pee>Families should also know that there are many resources for help and support: family associations (France Alzheimer, Lecma-Vaincre Alzheimer), respite platforms, specialized day care, training for caregivers, psychological support, financial assistance (APA, PCH). These resources are often unknown even though they can significantly improve the quality of life for everyone.<\/pee>\n<h2>10. When to consult? The importance of early diagnosis<\/h2>\n<pee>The early diagnosis of dementia \u2014 ideally as soon as the MCI (mild cognitive impairment) stage \u2014 represents a valuable intervention window. It allows for the implementation of cognitive stimulation strategies and medical management at the time when they are most effective, to anticipate important decisions (advance directives, organization of home care, legal and financial aspects), and to access clinical trials for emerging treatments.<\/pee>\n<pee>Unfortunately, the diagnosis of dementia is still too often delayed in France. On average, there is an 18-month gap between the first worrying symptoms and obtaining an accurate diagnosis. This diagnostic wandering period is detrimental to patients and their families, who remain in uncertainty and cannot access appropriate care.<\/pee>\n<div class=\"conseil-card\">\n<h4>\ud83d\udd0d Warning signs justifying a consultation<\/h4>\n<pee>Consult a general practitioner or a specialist if you observe in a loved one: repeated recent forgetfulness that disrupts daily life, difficulties in performing familiar tasks, language problems (finding words), frequent loss of objects in inappropriate places, unexplained mood or behavior changes, loss of initiative or progressive social withdrawal, difficulties in judgment or decision-making.<\/pee>\n <\/div>\n<pee>Validated cognitive tests often constitute the first step in evaluation. These tools, available online or in consultation, help to objectify initial concerns and motivate a specialized medical consultation. They do not replace a professional neuropsychological assessment, but provide a useful first reference for families hesitant to consult.<\/pee>\n<h2>11. Current treatments and future prospects<\/h2>\n<pee>Although there is currently no curative treatment for neurodegenerative dementias, several therapeutic approaches can slow progression, improve symptoms, and preserve quality of life. These treatments vary according to the form of dementia, highlighting the importance of accurate etiological diagnosis.<\/pee>\n<pee>In Alzheimer’s disease, specific drug treatments include cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and memantine. Their effectiveness is modest but real on cognitive functions and autonomy. In 2021, aducanumab (Aduhelm) was approved in the United States as the first treatment directly targeting amyloid plaques, although its effectiveness remains debated. Other anti-amyloid treatments are under development.<\/pee>\n<pee>Non-drug interventions play a central role: cognitive stimulation, adapted physical activity, maintaining social connections, managing the environment, supporting behavioral disorders. These approaches, well-documented scientifically, often constitute the core of daily care.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">\ud83d\udd2c Promising Research<\/div>\n<h4>The Hope of Tomorrow’s Treatments<\/h4>\n<pee>Research on dementia is progressing rapidly. In addition to anti-amyloid treatments, several avenues are being explored: immunotherapy, neuroprotection, gene therapies, deep brain stimulation, cellular therapies. Biomarkers now allow for the detection of the disease years before symptoms, paving the way for primary prevention.<\/pee>\n <\/div>\n<h2>12. The Role of Technology in Support<\/h2>\n<pee>New technologies are gradually transforming the support for people with dementia. Cognitive stimulation applications, connected objects for safety, orientation assistance systems, telemedicine, artificial intelligence for symptom monitoring: these innovations open new perspectives for maintaining autonomy and reassuring families.<\/pee>\n<pee>However, the use of these technologies must be adapted to the capabilities of each person and evolve with the progression of the disease. The challenge is to offer simple, intuitive, and truly useful tools, without creating frustration or digital exclusion.<\/pee>\n<div class=\"cta-box\">\n<h3>\ud83c\udfaf COCO: DYNSEO Innovation for Cognitive Support<\/h3>\n<pee>COCO represents the culmination of several years of research in adapted cognitive stimulation. Designed in collaboration with speech therapists and neuropsychologists, this digital solution offers more than 30 cognitive and physical activities tailored for people with neurocognitive disorders.<\/pee>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Try COCO for free<\/a><br \/>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n<\/p><\/div>\n<h2>13. Prevention and Modifiable Risk Factors<\/h2>\n<pee>Although age remains the primary risk factor for dementia, many modifiable factors can influence the risk of developing these diseases. The Lancet Commission on dementia prevention, intervention, and care has identified 12 modifiable risk factors responsible for about 40% of the overall risk.<\/pee>\n<pee>These factors include education level (early cognitive training), hearing loss (sensory stimulation), high blood pressure, obesity, smoking, depression, physical inactivity, diabetes, reduced social contacts, excessive alcohol consumption, head trauma, and air pollution. Addressing these factors, even late in life, can delay or prevent the onset of dementia.<\/pee>\n<div class=\"key-points\">\n<h4>\ud83c\udfaf Scientifically validated prevention strategies<\/h4>\n<ul>\n<li><strong>Regular physical activity:<\/strong> 150 minutes of moderate activity per week reduce the risk of cognitive decline by 20 to 30%<\/li>\n<li><strong>Continuous cognitive stimulation:<\/strong> new learning, reading, board games, social interactions<\/li>\n<li><strong>Mediterranean diet:<\/strong> rich in omega-3, antioxidants, fibers, low in saturated fats<\/li>\n<li><strong>Control of vascular factors:<\/strong> blood pressure, cholesterol, blood sugar<\/li>\n<li><strong>Maintaining social connections:<\/strong> combating isolation, participating in collective activities<\/li>\n<li><strong>Quality sleep:<\/strong> 7 to 8 hours per night, treatment of sleep disorders<\/li>\n<\/ul><\/div>\n<h2>14. The economic and societal impact of dementias<\/h2>\n<pee>Beyond medical and family aspects, dementias represent a major economic and societal challenge. In France, the total cost of caring for people with dementia is estimated at over 30 billion euros per year, including direct medical costs, medico-social care, and indirect costs related to the loss of productivity of caregivers.<\/pee>\n<pee>With the aging population, the number of affected individuals is expected to double by 2050, rising from 1.2 million today to over 2 million in France. This demographic change requires a profound adaptation of our health system and public policies.<\/pee>\n<pee>The challenge lies in the development of specialized care offerings, improvement of early diagnosis, support for family caregivers (who provide 80% of the assistance), adaptation of housing and transportation, training for professionals, and innovation in support. The national plan for neurodegenerative diseases 2014-2019 and its follow-ups aim to structure this collective response.<\/pee>\n<div class=\"faq-list\">\n<h2>Frequently asked questions about Alzheimer’s and dementia<\/h2>\n<div class=\"faq-item\">\n<div class=\"faq-q\">\n <span>Can you have Alzheimer’s without dementia?<\/span><br \/>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n<div class=\"faq-a\">\n <pee>Yes, during the preclinical phase (15-20 years) and the prodromal phase (MCI), Alzheimer’s lesions accumulate without causing actual dementia. The disorders remain mild and do not significantly affect autonomy. This is why we distinguish between Alzheimer’s disease (pathological process) and Alzheimer’s dementia (clinical syndrome).<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">\n <span>Are all memory losses in elderly people concerning?<\/span><br \/>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n<div class=\"faq-a\">\n <pee>No. Normal aging is accompanied by a physiological cognitive slowdown. What should raise concern: worsening forgetfulness, interference with daily activities, involves information<br \/>\n<script type=\"application\/ld+json\">\n[\n {\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? Guide Complet pour Comprendre | DYNSEO\",\n \"description\": \"Alzheimer vs D\u00e9mence - Comprendre & Informer - Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? 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En revanche, les pertes de memory qui perturbent la vie quotidienne, l'orientation, le jugement ou la capacit\u00e9 \u00e0 accomplir des t\u00e2ches famili\u00e8res peuvent indiquer un probl\u00e8me plus s\u00e9rieux n\u00e9cessitant une \u00e9valuation m\u00e9dicale.\"\n }\n }\n ]\n }\n]\n<\/script>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":4,"featured_media":323186,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"[et_pb_section fb_built=\"1\" _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"][et_pb_row _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" column_structure=\"4_4\" global_colors_info=\"{}\"][et_pb_column type=\"4_4\" _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"][et_pb_code _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"]<!DOCTYPE html>\n<html lang=\"fr\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? 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!important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<\/head>\n<body><section class=\"article-hero\">\n <div class=\"article-hero-inner\">\n <nav class=\"article-breadcrumb\">\n <a href=\"https:\/\/www.dynseo.com\">Home<\/a> > \n <a href=\"https:\/\/www.dynseo.com\/blog\">Blog<\/a> > \n <span>Alzheimer vs Dementia<\/span>\n <\/nav>\n \n <span class=\"article-category\">Understand & Inform<\/span>\n \n <h1>Alzheimer or Dementia: <span class=\"hl\">What Difference?<\/span> Complete Guide to Understanding<\/h1>\n \n <div class=\"article-meta\">\n <span>\ud83d\udcc5 April 2026<\/span>\n <span>\u23f1\ufe0f 15 min read<\/span>\n <span>\ud83d\udc65 Families & Professionals<\/span>\n <span class=\"stars\">\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n <\/div>\n <div class=\"article-hero-curve\"><\/div>\n <\/section>\n\n <div class=\"article-body\">\n <div class=\"container\">\n<div class=\"intro-block\">\n <p>The terms \u201cAlzheimer\u201d and \u201cdementia\u201d are often used interchangeably in our daily lives, creating persistent confusion. However, understanding their difference is not just a simple semantic exercise: it is an essential key to obtaining the correct diagnosis, accessing appropriate treatments, and better supporting a loved one. Alzheimer's disease is certainly the most common form of dementia, but it is only one cause among others. This fundamental distinction directly influences management, progression, and improvement prospects. In this comprehensive guide, we clearly explain this complex relationship, the different forms of dementia, their biological mechanisms, and their concrete implications for patients and their families.<\/p>\n <\/div>\n\n <div class=\"stats-grid\">\n <div class=\"stat-card\">\n <span class=\"number\">60-70%<\/span>\n <div class=\"label\">Of dementia cases are attributable to Alzheimer's disease<\/div>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">55M<\/span>\n <div class=\"label\">People affected by dementia worldwide (WHO, 2023)<\/div>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">200+<\/span>\n <div class=\"label\">Diseases and conditions that can cause a dementia syndrome<\/div>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">1M<\/span>\n <div class=\"label\">People affected by dementia in France<\/div>\n <\/div>\n <\/div>\n\n <h2>1. Dementia: a syndrome, not a disease<\/h2>\n <p>The first thing to understand is that dementia is not a disease in itself, but a syndrome \u2014 that is, a set of symptoms that can have multiple causes. The official medical term, preferred today in the scientific literature, is major neurocognitive disorder (according to the DSM-5, the Diagnostic and Statistical Manual of Mental Disorders). But the word \u201cdementia\u201d remains widely used in clinical practice and among the general public.<\/p>\n\n <p>For a dementia syndrome to be diagnosed, three conditions must be met: a significant cognitive decline compared to the previous level, in at least one area (memory, language, attention, praxis, executive functions, perception); this decline must be severe enough to interfere with daily activities and autonomy; and it must not be better explained by another disorder (depression, delirium, medication effect).<\/p>\n\n <p>Dementia can affect different cognitive functions depending on the underlying cause and the brain regions affected. The main areas involved are memory (especially episodic memory \u2014 memories of lived events), language (finding words, understanding, naming objects), executive functions (planning, organizing, solving problems), praxis (coordinating complex gestures), visuospatial functions (navigating in space), and social cognition (recognizing emotions, understanding social situations).<\/p>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">\ud83d\udca1 Expert Point<\/div>\n<div class=\"expert-box-title\">The fundamental distinction in clinical neurology<\/div>\n <p>\u201cDementia is a clinical syndrome. Alzheimer's disease is a specific neuropathological disease. One is a container, the other is a content among others.\u201d This distinction, although technical, has major practical implications for diagnosis and management.<\/p>\n <\/div>\n\n <h2>2. Alzheimer's disease: the most common cause<\/h2>\n <p>Alzheimer's disease is a specific neurodegenerative disease, characterized by precise and progressive brain lesions. It accounts for between 60 and 70% of all dementia cases, which explains the frequent confusion between the two terms. However, while every Alzheimer's disease leads to dementia in its advanced stage, not every dementia is Alzheimer's disease.<\/p>\n\n <p>From a neuropathological perspective, Alzheimer's disease is defined by two types of characteristic lesions, highlighted by Alo\u00efs Alzheimer himself in 1906. These lesions spread according to a relatively predictable anatomical pattern \u2014 described by Braak stages \u2014 starting with the hippocampus and entorhinal regions (hence the early impairment of episodic memory), and then gradually extending to the entire cortex.<\/p>\n\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd2c The two biological markers of Alzheimer's disease<\/div>\n <p><strong>Amyloid plaques (or senile plaques):<\/strong> extracellular deposits of beta-amyloid protein fragments that accumulate in the spaces between neurons. They disrupt synaptic communication and induce a local inflammatory reaction. These plaques appear many years \u2014 sometimes decades \u2014 before the first clinical symptoms.<\/p>\n <p><strong>Neurofibrillary tangles:<\/strong> intracellular accumulations of abnormally phosphorylated tau protein that form twisted filaments inside neurons. They disrupt the transport of nutrients and signals within the neuron, leading to its progressive death.<\/p>\n <\/div>\n\n <p>Alzheimer's disease typically progresses through several phases. A silent preclinical phase, which can last 15 to 20 years, during which lesions accumulate without causing noticeable symptoms. A prodromal phase (or MCI \u2014 Mild Cognitive Impairment \u2014 amnesic), characterized by noticeable episodic memory disorders but without significant impact on autonomy. Then the phase of established dementia, mild, moderate, and then severe, with an increasing impact on daily living activities and autonomy.<\/p>\n\n <h2>3. Other forms of dementia: beyond Alzheimer's<\/h2>\n <p>Alzheimer's disease is the most well-known, but other conditions can cause a dementia syndrome, with different cognitive profiles, progressions, and management approaches. Knowing them allows for a better understanding of diagnoses and adapting support.<\/p>\n\n <h3>Vascular dementia (15-20% of cases)<\/h3>\n <p>Vascular dementia is caused by brain lesions of vascular origin: cerebral infarctions (Stroke), multiple micro-infarctions (leukoaraiosis), or chronic cerebral perfusion disorders. Unlike Alzheimer's disease, its progression is often stair-stepped \u2014 worsening in stages after each new vascular episode \u2014 rather than gradual and continuous.<\/p>\n\n <p>Executive functions and processing speed are often more affected than episodic memory at the onset. Vascular risk factors (hypertension, diabetes, atrial fibrillation) are the main preventive levers. Management largely relies on controlling these cardiovascular risk factors.<\/p>\n\n <h3>Lewy body dementia (10-15% of cases)<\/h3>\n <p>Lewy body dementia is characterized by abnormal deposits of alpha-synuclein protein (the \"Lewy bodies\") in neurons. It presents a distinct clinical profile with significant fluctuations in cognitive performance (sometimes from one day to the next), early and recurrent visual hallucinations, a parkinsonian syndrome (slowness, rigidity, balance disorders), and a particular sensitivity to certain neuroleptics that can be dangerous for these patients.<\/p>\n\n <p>Dementia associated with Parkinson's disease shares similar mechanisms. These forms require specialized management, particularly due to specific medication risks.<\/p>\n\n <h3>Frontotemporal dementia (5-10% of cases)<\/h3>\n <p>Frontotemporal dementia (FTD) is a degeneration of the frontal and temporal lobes of the brain. It typically affects younger people (between 45 and 65 years old) than other dementias. Its profile is characteristic: changes in personality and behavior (disinhibition, apathy, socially inappropriate behaviors) or language disorders (primary progressive aphasia) dominate the clinical picture, while episodic memory is preserved for a long time.<\/p>\n\n <p>This atypical profile can delay diagnosis, with families often consulting first for psychiatric or relational disorders before the neurological nature is recognized.<\/p>\n<div class=\"comparison-table\">\n <table>\n <thead>\n <tr>\n <th>Type of dementia<\/th>\n <th>Frequency<\/th>\n <th>Dominant early symptoms<\/th>\n <th>Evolution<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Alzheimer's disease<\/td>\n <td>60-70 %<\/td>\n <td>Episodic memory (recent forgetfulness)<\/td>\n <td>Progressive and continuous<\/td>\n <\/tr>\n <tr>\n <td>Vascular dementia<\/td>\n <td>15-20 %<\/td>\n <td>Executive functions, slowness<\/td>\n <td>In stages (Stroke)<\/td>\n <\/tr>\n <tr>\n <td>Lewy body<\/td>\n <td>10-15 %<\/td>\n <td>Hallucinations, fluctuations, parkinsonism<\/td>\n <td>Progressive with fluctuations<\/td>\n <\/tr>\n <tr>\n <td>Fronto-temporal<\/td>\n <td>5-10 %<\/td>\n <td>Behavior, personality, language<\/td>\n <td>Progressive (faster)<\/td>\n <\/tr>\n <tr>\n <td>Mixed forms<\/td>\n <td>10-20 %<\/td>\n <td>Variable depending on components<\/td>\n <td>Progressive<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h2>4. Mixed forms and reversible dementias<\/h2>\n <p>It is common, especially among very elderly people, to find mixed forms combining Alzheimer's lesions and vascular lesions. These mixed forms represent a significant proportion of dementias in old age and sometimes complicate the establishment of a precise etiological diagnosis.<\/p>\n\n <p>Moreover, some causes of cognitive syndrome are potentially reversible: hypothyroidism, vitamin B12 deficiency, severe depression (depressive pseudo-dementia), normal pressure hydrocephalus, iatrogenic effects of certain medications, infections, electrolyte imbalances. This is why a complete biological and clinical assessment is essential before any diagnosis of neurodegenerative dementia \u2014 to avoid missing a treatable cause.<\/p>\n\n <div class=\"tip-box\">\n<div class=\"tip-box-label\">\u26a0\ufe0f Attention<\/div>\n <h4>Do not confuse with normal aging<\/h4>\n <p>Forgetting where one has put their keys is common at any age. What distinguishes normal aging from dementia is the severity, progression, and impact on daily life. In normal cognitive aging, it may take longer to find a word or information, but one eventually succeeds. In dementia, forgetfulness progressively worsens and genuinely interferes with usual activities. A persistent doubt deserves a professional evaluation.<\/p>\n <\/div>\n\n <h2>5. How do we distinguish between different dementias?<\/h2>\n <p>The differential diagnosis of dementias \u2014 that is, distinguishing which form of dementia is involved \u2014 is one of the most complex tasks in neurology and geriatrics. It relies on several complementary steps that require specialized expertise and sophisticated diagnostic tools.<\/p>\n\n <p>The diagnostic evaluation of dementia typically includes a thorough clinical interview (medical history, symptom history, medical and family history), a neuropsychological assessment that objectively characterizes the profile of cognitive impairments (memory, language, attention, executive functions, praxis), a biological assessment (to rule out treatable causes), brain imaging (mainly MRI, sometimes PET scan) allowing visualization of regional atrophies, vascular lesions, or amyloid deposits, and sometimes an analysis of cerebrospinal fluid (Alzheimer's biomarkers: beta-amyloid, tau, phospho-tau) or genetic tests in familial forms.<\/p>\n\n <h3>The role of neuropsychological evaluation<\/h3>\n <p>The neuropsychological evaluation is central to the diagnosis of dementias. It not only confirms the existence of cognitive decline and measures its severity but also characterizes the profile of impairments \u2014 which significantly guides the etiological diagnosis. An early and predominant impairment of episodic memory (with gradual forgetfulness) is characteristic of Alzheimer's disease. Predominant executive and attentional disorders point towards vascular dementia. Behavioral and language disorders with relatively preserved memory suggest frontotemporal dementia.<\/p>\n\n <p>This evaluation, conducted by a specialized neuropsychologist, includes a battery of standardized tests systematically exploring all cognitive domains. It often constitutes the key element of the differential diagnosis and allows for monitoring changes over time.<\/p>\n<div class=\"conseil-card\">\n <h4>\ud83d\udea6 The DYNSEO Alert Signals Card<\/h4>\n <p>The DYNSEO Alert Signals Card is a practical tool designed to help families and professionals quickly identify behaviors and cognitive difficulties that warrant a medical evaluation. It allows for structuring the observation of symptoms without alarmism, so as not to miss a valuable intervention window. Consult it before any medical appointment to best prepare for the discussion with professionals.<\/p>\n <\/div>\n\n <h2>6. Alzheimer's disease and dementia: key differences to remember<\/h2>\n <p>For a clear understanding, let\u2019s summarize the essential distinctions between Alzheimer's disease and dementia. These nuances, although seemingly technical, have major practical implications for patients, families, and healthcare professionals.<\/p>\n\n <div class=\"key-points\">\n <h4>\ud83d\udccc The relationship between dementia and Alzheimer's disease in 5 key points<\/h4>\n <ul>\n <li><strong>Dementia is a syndrome, Alzheimer's is a disease.<\/strong> Dementia refers to a set of severe cognitive symptoms; Alzheimer's is one of the diseases that can cause this syndrome.<\/li>\n <li><strong>Alzheimer's is the most common cause of dementia (60-70%), but not the only one.<\/strong> Vascular dementias, Lewy body dementia, frontotemporal dementias, and mixed dementias represent other significant cases.<\/li>\n <li><strong>Not every Alzheimer's disease necessarily leads to dementia from the start.<\/strong> There are preclinical and prodromal phases (MCI) before the stage of actual dementia.<\/li>\n <li><strong>The precise etiological diagnosis is crucial.<\/strong> It conditions the management, available treatments, and prognosis. Some effective medications in Alzheimer's are contraindicated in Lewy body dementia.<\/li>\n <li><strong>The confusion between the two terms can delay diagnosis.<\/strong> Atypical symptoms (behavioral, language, early motor) should guide towards other etiologies than just Alzheimer's disease.<\/li>\n <\/ul>\n <\/div>\n\n <p>This distinction also has important implications for medical research and the development of new treatments. Clinical trials are generally specific to a particular etiology, and the biomarkers used for monitoring differ according to the forms of dementia.<\/p>\n\n <h2>7. Alzheimer's disease in detail: symptoms and progression<\/h2>\n <p>Since Alzheimer's disease accounts for the majority of dementia cases, it is useful to describe its clinical picture and typical progression more precisely. This knowledge helps families better understand what lies ahead and to adapt their support.<\/p>\n\n <p>Alzheimer's disease typically progresses in three main stages, with duration varying considerably from person to person (on average 8 to 10 years between diagnosis and death, but with significant variations from 3 to 20 years depending on the age of onset, general condition, and access to care).<\/p>\n\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Mild stage (beginning of the disease)<\/div>\n <p>Forgetting mainly concerns recent events: conversations from the day before, appointments, names of recently met people. The person may get lost in unfamiliar places. They may have difficulty finding their words (word-finding difficulties). They remain autonomous for most daily activities but may need help with complex tasks (financial management, planning). They are often aware of their difficulties, which can lead to anxiety and reactive depression.<\/p>\n <\/div>\n\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Moderate stage<\/div>\n <p>Forgetting extends to older events. Difficulties with temporal-spatial orientation appear (not knowing the date, getting lost in familiar places). Language becomes simplified. Behavioral issues may arise: agitation, wandering, sleep disturbances, sometimes hallucinations. Dependence for daily activities increases (dressing, hygiene, meals). The burden on the primary caregiver becomes significant.<\/p>\n <\/div>\n\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Severe stage<\/div>\n <p>Verbal communication becomes very limited. Recognition of loved ones may be lost. The person becomes completely dependent for all care. Physical complications arise (swallowing difficulties, infections, immobilization). Psychological and emotional life remains present even at this advanced stage: touch, music, familiar voice, positive emotions can still be felt and communicated.<\/p>\n <\/div>\n\n <p>It is crucial to understand that this evolution is not linear and that many factors can influence it: cognitive and social stimulation, physical activity, quality of support, management of associated disorders (depression, agitation), medical comorbidities.<\/p>\n\n <h2>8. Support and cognitive stimulation: adapt to the cause<\/h2>\n <p>A precise understanding of the etiological diagnosis is not just academic: it has direct implications for support and cognitive stimulation. Each form of dementia requires specific approaches to optimize the effectiveness of non-drug interventions.<\/p>\n\n <p>In Alzheimer's disease, cognitive stimulation is one of the best-documented non-drug interventions to maintain functional abilities and quality of life. It leverages long-preserved memories (implicit memory, procedural memory, emotional memory) to maintain engagement, pleasure, and self-esteem. The most effective activities are those that are individualized, regular, adapted to the current cognitive level, and that preserve a sense of competence.<\/p>\n\n <div class=\"cta-box\">\n <h3>\ud83e\udde9 COCO THINKS and COCO MOVES \u2014 DYNSEO specialized applications<\/h3>\n <p>COCO THINKS and COCO MOVES are cognitive stimulation applications developed by DYNSEO specifically for people with cognitive disorders and their caregivers. Their adapted interface, progressive exercises, and holistic approach (cognitive + physical) make them reference tools for daily support.<\/p>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Discover COCO<\/a>\n <\/div>\n <\/div>\n\n <p>In vascular dementias, the focus will be on executive and attentional functions, with exercises in planning, organization, and processing speed. In Lewy body dementias, significant fluctuations must be taken into account and the pace of sessions adapted. In frontotemporal dementias, behavioral disorders will require specific approaches in collaboration with specialized teams.<\/p>\n\n <h3>Coordination of care and personalized follow-up<\/h3>\n <p>When several professionals (speech therapist, psychomotor therapist, occupational therapist, nursing assistant) and the family are involved with the same person, the coordination and follow-up of stimulation activities are essential to ensure consistency and adjust approaches. A shared follow-up notebook allows for documenting stimulation sessions, observing the evolution of abilities, and facilitating communication among the various stakeholders.<\/p>\n\n <p>This coordination is particularly important because the effects of cognitive stimulation are cumulative and require regularity and a coherent progression to be optimal.<\/p>\n\n <h2>9. What families need to know<\/h2>\n <p>For the relatives of a person with dementia, understanding the diagnosis is often a painful but necessary step. Several essential points can help families better cope with this ordeal and optimize the support of their loved one.<\/p>\n<div class=\"key-points\">\n <h4>\ud83d\udc99 Essential points for families<\/h4>\n <ul>\n <li><strong>The person remains a person.<\/strong> Even with severe dementia, the identity, emotions, preferences, and dignity of the person persist. Non-verbal communication remains possible and emotional bonds retain their importance.<\/li>\n <li><strong>Predictability helps.<\/strong> Stable routines, familiar environments, and clear time markers reduce anxiety and behavioral disorders. Organizing daily life becomes a therapeutic tool.<\/li>\n <li><strong>The caregiver needs support.<\/strong> Caregiver burnout is real and common. Respite time, psychological support, and support groups are essential to maintain the quality of care.<\/li>\n <li><strong>Early diagnosis changes everything.<\/strong> The earlier the diagnosis is made, the sooner measures can be implemented to maintain quality of life and plan for the future under the best conditions.<\/li>\n <\/ul>\n <\/div>\n\n <p>Families should also know that there are many resources for help and support: family associations (France Alzheimer, Lecma-Vaincre Alzheimer), respite platforms, specialized day care, training for caregivers, psychological support, financial assistance (APA, PCH). These resources are often unknown even though they can significantly improve the quality of life for everyone.<\/p>\n\n <h2>10. When to consult? The importance of early diagnosis<\/h2>\n <p>The early diagnosis of dementia \u2014 ideally as soon as the MCI (mild cognitive impairment) stage \u2014 represents a valuable intervention window. It allows for the implementation of cognitive stimulation strategies and medical management at the time when they are most effective, to anticipate important decisions (advance directives, organization of home care, legal and financial aspects), and to access clinical trials for emerging treatments.<\/p>\n\n <p>Unfortunately, the diagnosis of dementia is still too often delayed in France. On average, there is an 18-month gap between the first worrying symptoms and obtaining an accurate diagnosis. This diagnostic wandering period is detrimental to patients and their families, who remain in uncertainty and cannot access appropriate care.<\/p>\n<div class=\"conseil-card\">\n <h4>\ud83d\udd0d Warning signs justifying a consultation<\/h4>\n <p>Consult a general practitioner or a specialist if you observe in a loved one: repeated recent forgetfulness that disrupts daily life, difficulties in performing familiar tasks, language problems (finding words), frequent loss of objects in inappropriate places, unexplained mood or behavior changes, loss of initiative or progressive social withdrawal, difficulties in judgment or decision-making.<\/p>\n <\/div>\n\n <p>Validated cognitive tests often constitute the first step in evaluation. These tools, available online or in consultation, help to objectify initial concerns and motivate a specialized medical consultation. They do not replace a professional neuropsychological assessment, but provide a useful first reference for families hesitant to consult.<\/p>\n\n <h2>11. Current treatments and future prospects<\/h2>\n <p>Although there is currently no curative treatment for neurodegenerative dementias, several therapeutic approaches can slow progression, improve symptoms, and preserve quality of life. These treatments vary according to the form of dementia, highlighting the importance of accurate etiological diagnosis.<\/p>\n\n <p>In Alzheimer's disease, specific drug treatments include cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and memantine. Their effectiveness is modest but real on cognitive functions and autonomy. In 2021, aducanumab (Aduhelm) was approved in the United States as the first treatment directly targeting amyloid plaques, although its effectiveness remains debated. Other anti-amyloid treatments are under development.<\/p>\n\n <p>Non-drug interventions play a central role: cognitive stimulation, adapted physical activity, maintaining social connections, managing the environment, supporting behavioral disorders. These approaches, well-documented scientifically, often constitute the core of daily care.<\/p>\n\n <div class=\"tip-box\">\n<div class=\"tip-box-label\">\ud83d\udd2c Promising Research<\/div>\n <h4>The Hope of Tomorrow's Treatments<\/h4>\n <p>Research on dementia is progressing rapidly. In addition to anti-amyloid treatments, several avenues are being explored: immunotherapy, neuroprotection, gene therapies, deep brain stimulation, cellular therapies. Biomarkers now allow for the detection of the disease years before symptoms, paving the way for primary prevention.<\/p>\n <\/div>\n\n <h2>12. The Role of Technology in Support<\/h2>\n <p>New technologies are gradually transforming the support for people with dementia. Cognitive stimulation applications, connected objects for safety, orientation assistance systems, telemedicine, artificial intelligence for symptom monitoring: these innovations open new perspectives for maintaining autonomy and reassuring families.<\/p>\n\n <p>However, the use of these technologies must be adapted to the capabilities of each person and evolve with the progression of the disease. The challenge is to offer simple, intuitive, and truly useful tools, without creating frustration or digital exclusion.<\/p>\n\n <div class=\"cta-box\">\n <h3>\ud83c\udfaf COCO: DYNSEO Innovation for Cognitive Support<\/h3>\n <p>COCO represents the culmination of several years of research in adapted cognitive stimulation. Designed in collaboration with speech therapists and neuropsychologists, this digital solution offers more than 30 cognitive and physical activities tailored for people with neurocognitive disorders.<\/p>\n <div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Try COCO for free<\/a>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n <\/div>\n\n <h2>13. Prevention and Modifiable Risk Factors<\/h2>\n <p>Although age remains the primary risk factor for dementia, many modifiable factors can influence the risk of developing these diseases. The Lancet Commission on dementia prevention, intervention, and care has identified 12 modifiable risk factors responsible for about 40% of the overall risk.<\/p>\n\n <p>These factors include education level (early cognitive training), hearing loss (sensory stimulation), high blood pressure, obesity, smoking, depression, physical inactivity, diabetes, reduced social contacts, excessive alcohol consumption, head trauma, and air pollution. Addressing these factors, even late in life, can delay or prevent the onset of dementia.<\/p>\n<div class=\"key-points\">\n <h4>\ud83c\udfaf Scientifically validated prevention strategies<\/h4>\n <ul>\n <li><strong>Regular physical activity:<\/strong> 150 minutes of moderate activity per week reduce the risk of cognitive decline by 20 to 30%<\/li>\n <li><strong>Continuous cognitive stimulation:<\/strong> new learning, reading, board games, social interactions<\/li>\n <li><strong>Mediterranean diet:<\/strong> rich in omega-3, antioxidants, fibers, low in saturated fats<\/li>\n <li><strong>Control of vascular factors:<\/strong> blood pressure, cholesterol, blood sugar<\/li>\n <li><strong>Maintaining social connections:<\/strong> combating isolation, participating in collective activities<\/li>\n <li><strong>Quality sleep:<\/strong> 7 to 8 hours per night, treatment of sleep disorders<\/li>\n <\/ul>\n <\/div>\n\n <h2>14. The economic and societal impact of dementias<\/h2>\n <p>Beyond medical and family aspects, dementias represent a major economic and societal challenge. In France, the total cost of caring for people with dementia is estimated at over 30 billion euros per year, including direct medical costs, medico-social care, and indirect costs related to the loss of productivity of caregivers.<\/p>\n\n <p>With the aging population, the number of affected individuals is expected to double by 2050, rising from 1.2 million today to over 2 million in France. This demographic change requires a profound adaptation of our health system and public policies.<\/p>\n\n <p>The challenge lies in the development of specialized care offerings, improvement of early diagnosis, support for family caregivers (who provide 80% of the assistance), adaptation of housing and transportation, training for professionals, and innovation in support. The national plan for neurodegenerative diseases 2014-2019 and its follow-ups aim to structure this collective response.<\/p>\n\n <div class=\"faq-list\">\n <h2>Frequently asked questions about Alzheimer's and dementia<\/h2>\n \n <div class=\"faq-item\">\n <div class=\"faq-q\">\n <span>Can you have Alzheimer's without dementia?<\/span>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n <div class=\"faq-a\">\n <p>Yes, during the preclinical phase (15-20 years) and the prodromal phase (MCI), Alzheimer's lesions accumulate without causing actual dementia. The disorders remain mild and do not significantly affect autonomy. This is why we distinguish between Alzheimer's disease (pathological process) and Alzheimer's dementia (clinical syndrome).<\/p>\n <\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-q\">\n <span>Are all memory losses in elderly people concerning?<\/span>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n<div class=\"faq-a\">\n <p>No. Normal aging is accompanied by a physiological cognitive slowdown. What should raise concern: worsening forgetfulness, interference with daily activities, involves information\n<script type=\"application\/ld+json\">\n[\n {\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? Guide Complet pour Comprendre | DYNSEO\",\n \"description\": \"Alzheimer vs D\u00e9mence - Comprendre & Informer - Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? 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{\n p, li { text-align: left !important; word-spacing: normal !important; hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; }\n .container { padding: 12px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<p><\/head><br \/>\n<body><\/p>\n<section class=\"article-hero\">\n<div class=\"article-hero-inner\">\n<nav class=\"article-breadcrumb\">\n <a href=\"https:\/\/www.dynseo.com\/en\/\">Home<\/a> ><br \/>\n <a href=\"https:\/\/www.dynseo.com\/blog\">Blog<\/a> ><br \/>\n <span>Alzheimer vs Dementia<\/span><br \/>\n <\/nav>\n<p> <span class=\"article-category\">Understand & Inform<\/span><\/p>\n<h1>Alzheimer or Dementia: <span class=\"hl\">What Difference?<\/span> Complete Guide to Understanding<\/h1>\n<div class=\"article-meta\">\n <span>\ud83d\udcc5 April 2026<\/span><br \/>\n <span>\u23f1\ufe0f 15 min read<\/span><br \/>\n <span>\ud83d\udc65 Families & Professionals<\/span><br \/>\n <span class=\"stars\">\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n<\/p><\/div>\n<div class=\"article-hero-curve\"><\/div>\n<\/section>\n<div class=\"article-body\">\n<div class=\"container\">\n<div class=\"intro-block\">\n <pee>The terms \u201cAlzheimer\u201d and \u201cdementia\u201d are often used interchangeably in our daily lives, creating persistent confusion. However, understanding their difference is not just a simple semantic exercise: it is an essential key to obtaining the correct diagnosis, accessing appropriate treatments, and better supporting a loved one. Alzheimer’s disease is certainly the most common form of dementia, but it is only one cause among others. This fundamental distinction directly influences management, progression, and improvement prospects. In this comprehensive guide, we clearly explain this complex relationship, the different forms of dementia, their biological mechanisms, and their concrete implications for patients and their families.<\/pee>\n <\/div>\n<div class=\"stats-grid\">\n<div class=\"stat-card\">\n <span class=\"number\">60-70%<\/span><\/p>\n<div class=\"label\">Of dementia cases are attributable to Alzheimer’s disease<\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n <span class=\"number\">55M<\/span><\/p>\n<div class=\"label\">People affected by dementia worldwide (WHO, 2023)<\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n <span class=\"number\">200+<\/span><\/p>\n<div class=\"label\">Diseases and conditions that can cause a dementia syndrome<\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n <span class=\"number\">1M<\/span><\/p>\n<div class=\"label\">People affected by dementia in France<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<h2>1. Dementia: a syndrome, not a disease<\/h2>\n<pee>The first thing to understand is that dementia is not a disease in itself, but a syndrome \u2014 that is, a set of symptoms that can have multiple causes. The official medical term, preferred today in the scientific literature, is major neurocognitive disorder (according to the DSM-5, the Diagnostic and Statistical Manual of Mental Disorders). But the word \u201cdementia\u201d remains widely used in clinical practice and among the general public.<\/pee>\n<pee>For a dementia syndrome to be diagnosed, three conditions must be met: a significant cognitive decline compared to the previous level, in at least one area (memory, language, attention, praxis, executive functions, perception); this decline must be severe enough to interfere with daily activities and autonomy; and it must not be better explained by another disorder (depression, delirium, medication effect).<\/pee>\n<pee>Dementia can affect different cognitive functions depending on the underlying cause and the brain regions affected. The main areas involved are memory (especially episodic memory \u2014 memories of lived events), language (finding words, understanding, naming objects), executive functions (planning, organizing, solving problems), praxis (coordinating complex gestures), visuospatial functions (navigating in space), and social cognition (recognizing emotions, understanding social situations).<\/pee>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">\ud83d\udca1 Expert Point<\/div>\n<div class=\"expert-box-title\">The fundamental distinction in clinical neurology<\/div>\n<pee>\u201cDementia is a clinical syndrome. Alzheimer’s disease is a specific neuropathological disease. One is a container, the other is a content among others.\u201d This distinction, although technical, has major practical implications for diagnosis and management.<\/pee>\n <\/div>\n<h2>2. Alzheimer’s disease: the most common cause<\/h2>\n<pee>Alzheimer’s disease is a specific neurodegenerative disease, characterized by precise and progressive brain lesions. It accounts for between 60 and 70% of all dementia cases, which explains the frequent confusion between the two terms. However, while every Alzheimer’s disease leads to dementia in its advanced stage, not every dementia is Alzheimer’s disease.<\/pee>\n<pee>From a neuropathological perspective, Alzheimer’s disease is defined by two types of characteristic lesions, highlighted by Alo\u00efs Alzheimer himself in 1906. These lesions spread according to a relatively predictable anatomical pattern \u2014 described by Braak stages \u2014 starting with the hippocampus and entorhinal regions (hence the early impairment of episodic memory), and then gradually extending to the entire cortex.<\/pee>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd2c The two biological markers of Alzheimer’s disease<\/div>\n<pee><strong>Amyloid plaques (or senile plaques):<\/strong> extracellular deposits of beta-amyloid protein fragments that accumulate in the spaces between neurons. They disrupt synaptic communication and induce a local inflammatory reaction. These plaques appear many years \u2014 sometimes decades \u2014 before the first clinical symptoms.<\/pee>\n <pee><strong>Neurofibrillary tangles:<\/strong> intracellular accumulations of abnormally phosphorylated tau protein that form twisted filaments inside neurons. They disrupt the transport of nutrients and signals within the neuron, leading to its progressive death.<\/pee>\n <\/div>\n<pee>Alzheimer’s disease typically progresses through several phases. A silent preclinical phase, which can last 15 to 20 years, during which lesions accumulate without causing noticeable symptoms. A prodromal phase (or MCI \u2014 Mild Cognitive Impairment \u2014 amnesic), characterized by noticeable episodic memory disorders but without significant impact on autonomy. Then the phase of established dementia, mild, moderate, and then severe, with an increasing impact on daily living activities and autonomy.<\/pee>\n<h2>3. Other forms of dementia: beyond Alzheimer’s<\/h2>\n<pee>Alzheimer’s disease is the most well-known, but other conditions can cause a dementia syndrome, with different cognitive profiles, progressions, and management approaches. Knowing them allows for a better understanding of diagnoses and adapting support.<\/pee>\n<h3>Vascular dementia (15-20% of cases)<\/h3>\n<pee>Vascular dementia is caused by brain lesions of vascular origin: cerebral infarctions (Stroke), multiple micro-infarctions (leukoaraiosis), or chronic cerebral perfusion disorders. Unlike Alzheimer’s disease, its progression is often stair-stepped \u2014 worsening in stages after each new vascular episode \u2014 rather than gradual and continuous.<\/pee>\n<pee>Executive functions and processing speed are often more affected than episodic memory at the onset. Vascular risk factors (hypertension, diabetes, atrial fibrillation) are the main preventive levers. Management largely relies on controlling these cardiovascular risk factors.<\/pee>\n<h3>Lewy body dementia (10-15% of cases)<\/h3>\n<pee>Lewy body dementia is characterized by abnormal deposits of alpha-synuclein protein (the “Lewy bodies”) in neurons. It presents a distinct clinical profile with significant fluctuations in cognitive performance (sometimes from one day to the next), early and recurrent visual hallucinations, a parkinsonian syndrome (slowness, rigidity, balance disorders), and a particular sensitivity to certain neuroleptics that can be dangerous for these patients.<\/pee>\n<pee>Dementia associated with Parkinson’s disease shares similar mechanisms. These forms require specialized management, particularly due to specific medication risks.<\/pee>\n<h3>Frontotemporal dementia (5-10% of cases)<\/h3>\n<pee>Frontotemporal dementia (FTD) is a degeneration of the frontal and temporal lobes of the brain. It typically affects younger people (between 45 and 65 years old) than other dementias. Its profile is characteristic: changes in personality and behavior (disinhibition, apathy, socially inappropriate behaviors) or language disorders (primary progressive aphasia) dominate the clinical picture, while episodic memory is preserved for a long time.<\/pee>\n<pee>This atypical profile can delay diagnosis, with families often consulting first for psychiatric or relational disorders before the neurological nature is recognized.<\/pee>\n<div class=\"comparison-table\">\n<table>\n<thead>\n<tr>\n<th>Type of dementia<\/th>\n<th>Frequency<\/th>\n<th>Dominant early symptoms<\/th>\n<th>Evolution<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Alzheimer’s disease<\/td>\n<td>60-70 %<\/td>\n<td>Episodic memory (recent forgetfulness)<\/td>\n<td>Progressive and continuous<\/td>\n<\/tr>\n<tr>\n<td>Vascular dementia<\/td>\n<td>15-20 %<\/td>\n<td>Executive functions, slowness<\/td>\n<td>In stages (Stroke)<\/td>\n<\/tr>\n<tr>\n<td>Lewy body<\/td>\n<td>10-15 %<\/td>\n<td>Hallucinations, fluctuations, parkinsonism<\/td>\n<td>Progressive with fluctuations<\/td>\n<\/tr>\n<tr>\n<td>Fronto-temporal<\/td>\n<td>5-10 %<\/td>\n<td>Behavior, personality, language<\/td>\n<td>Progressive (faster)<\/td>\n<\/tr>\n<tr>\n<td>Mixed forms<\/td>\n<td>10-20 %<\/td>\n<td>Variable depending on components<\/td>\n<td>Progressive<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h2>4. Mixed forms and reversible dementias<\/h2>\n<pee>It is common, especially among very elderly people, to find mixed forms combining Alzheimer’s lesions and vascular lesions. These mixed forms represent a significant proportion of dementias in old age and sometimes complicate the establishment of a precise etiological diagnosis.<\/pee>\n<pee>Moreover, some causes of cognitive syndrome are potentially reversible: hypothyroidism, vitamin B12 deficiency, severe depression (depressive pseudo-dementia), normal pressure hydrocephalus, iatrogenic effects of certain medications, infections, electrolyte imbalances. This is why a complete biological and clinical assessment is essential before any diagnosis of neurodegenerative dementia \u2014 to avoid missing a treatable cause.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">\u26a0\ufe0f Attention<\/div>\n<h4>Do not confuse with normal aging<\/h4>\n<pee>Forgetting where one has put their keys is common at any age. What distinguishes normal aging from dementia is the severity, progression, and impact on daily life. In normal cognitive aging, it may take longer to find a word or information, but one eventually succeeds. In dementia, forgetfulness progressively worsens and genuinely interferes with usual activities. A persistent doubt deserves a professional evaluation.<\/pee>\n <\/div>\n<h2>5. How do we distinguish between different dementias?<\/h2>\n<pee>The differential diagnosis of dementias \u2014 that is, distinguishing which form of dementia is involved \u2014 is one of the most complex tasks in neurology and geriatrics. It relies on several complementary steps that require specialized expertise and sophisticated diagnostic tools.<\/pee>\n<pee>The diagnostic evaluation of dementia typically includes a thorough clinical interview (medical history, symptom history, medical and family history), a neuropsychological assessment that objectively characterizes the profile of cognitive impairments (memory, language, attention, executive functions, praxis), a biological assessment (to rule out treatable causes), brain imaging (mainly MRI, sometimes PET scan) allowing visualization of regional atrophies, vascular lesions, or amyloid deposits, and sometimes an analysis of cerebrospinal fluid (Alzheimer’s biomarkers: beta-amyloid, tau, phospho-tau) or genetic tests in familial forms.<\/pee>\n<h3>The role of neuropsychological evaluation<\/h3>\n<pee>The neuropsychological evaluation is central to the diagnosis of dementias. It not only confirms the existence of cognitive decline and measures its severity but also characterizes the profile of impairments \u2014 which significantly guides the etiological diagnosis. An early and predominant impairment of episodic memory (with gradual forgetfulness) is characteristic of Alzheimer’s disease. Predominant executive and attentional disorders point towards vascular dementia. Behavioral and language disorders with relatively preserved memory suggest frontotemporal dementia.<\/pee>\n<pee>This evaluation, conducted by a specialized neuropsychologist, includes a battery of standardized tests systematically exploring all cognitive domains. It often constitutes the key element of the differential diagnosis and allows for monitoring changes over time.<\/pee>\n<div class=\"conseil-card\">\n<h4>\ud83d\udea6 The DYNSEO Alert Signals Card<\/h4>\n<pee>The DYNSEO Alert Signals Card is a practical tool designed to help families and professionals quickly identify behaviors and cognitive difficulties that warrant a medical evaluation. It allows for structuring the observation of symptoms without alarmism, so as not to miss a valuable intervention window. Consult it before any medical appointment to best prepare for the discussion with professionals.<\/pee>\n <\/div>\n<h2>6. Alzheimer’s disease and dementia: key differences to remember<\/h2>\n<pee>For a clear understanding, let\u2019s summarize the essential distinctions between Alzheimer’s disease and dementia. These nuances, although seemingly technical, have major practical implications for patients, families, and healthcare professionals.<\/pee>\n<div class=\"key-points\">\n<h4>\ud83d\udccc The relationship between dementia and Alzheimer’s disease in 5 key points<\/h4>\n<ul>\n<li><strong>Dementia is a syndrome, Alzheimer’s is a disease.<\/strong> Dementia refers to a set of severe cognitive symptoms; Alzheimer’s is one of the diseases that can cause this syndrome.<\/li>\n<li><strong>Alzheimer’s is the most common cause of dementia (60-70%), but not the only one.<\/strong> Vascular dementias, Lewy body dementia, frontotemporal dementias, and mixed dementias represent other significant cases.<\/li>\n<li><strong>Not every Alzheimer’s disease necessarily leads to dementia from the start.<\/strong> There are preclinical and prodromal phases (MCI) before the stage of actual dementia.<\/li>\n<li><strong>The precise etiological diagnosis is crucial.<\/strong> It conditions the management, available treatments, and prognosis. Some effective medications in Alzheimer’s are contraindicated in Lewy body dementia.<\/li>\n<li><strong>The confusion between the two terms can delay diagnosis.<\/strong> Atypical symptoms (behavioral, language, early motor) should guide towards other etiologies than just Alzheimer’s disease.<\/li>\n<\/ul><\/div>\n<pee>This distinction also has important implications for medical research and the development of new treatments. Clinical trials are generally specific to a particular etiology, and the biomarkers used for monitoring differ according to the forms of dementia.<\/pee>\n<h2>7. Alzheimer’s disease in detail: symptoms and progression<\/h2>\n<pee>Since Alzheimer’s disease accounts for the majority of dementia cases, it is useful to describe its clinical picture and typical progression more precisely. This knowledge helps families better understand what lies ahead and to adapt their support.<\/pee>\n<pee>Alzheimer’s disease typically progresses in three main stages, with duration varying considerably from person to person (on average 8 to 10 years between diagnosis and death, but with significant variations from 3 to 20 years depending on the age of onset, general condition, and access to care).<\/pee>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Mild stage (beginning of the disease)<\/div>\n<pee>Forgetting mainly concerns recent events: conversations from the day before, appointments, names of recently met people. The person may get lost in unfamiliar places. They may have difficulty finding their words (word-finding difficulties). They remain autonomous for most daily activities but may need help with complex tasks (financial management, planning). They are often aware of their difficulties, which can lead to anxiety and reactive depression.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Moderate stage<\/div>\n<pee>Forgetting extends to older events. Difficulties with temporal-spatial orientation appear (not knowing the date, getting lost in familiar places). Language becomes simplified. Behavioral issues may arise: agitation, wandering, sleep disturbances, sometimes hallucinations. Dependence for daily activities increases (dressing, hygiene, meals). The burden on the primary caregiver becomes significant.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Severe stage<\/div>\n<pee>Verbal communication becomes very limited. Recognition of loved ones may be lost. The person becomes completely dependent for all care. Physical complications arise (swallowing difficulties, infections, immobilization). Psychological and emotional life remains present even at this advanced stage: touch, music, familiar voice, positive emotions can still be felt and communicated.<\/pee>\n <\/div>\n<pee>It is crucial to understand that this evolution is not linear and that many factors can influence it: cognitive and social stimulation, physical activity, quality of support, management of associated disorders (depression, agitation), medical comorbidities.<\/pee>\n<h2>8. Support and cognitive stimulation: adapt to the cause<\/h2>\n<pee>A precise understanding of the etiological diagnosis is not just academic: it has direct implications for support and cognitive stimulation. Each form of dementia requires specific approaches to optimize the effectiveness of non-drug interventions.<\/pee>\n<pee>In Alzheimer’s disease, cognitive stimulation is one of the best-documented non-drug interventions to maintain functional abilities and quality of life. It leverages long-preserved memories (implicit memory, procedural memory, emotional memory) to maintain engagement, pleasure, and self-esteem. The most effective activities are those that are individualized, regular, adapted to the current cognitive level, and that preserve a sense of competence.<\/pee>\n<div class=\"cta-box\">\n<h3>\ud83e\udde9 COCO THINKS and COCO MOVES \u2014 DYNSEO specialized applications<\/h3>\n<pee>COCO THINKS and COCO MOVES are cognitive stimulation applications developed by DYNSEO specifically for people with cognitive disorders and their caregivers. Their adapted interface, progressive exercises, and holistic approach (cognitive + physical) make them reference tools for daily support.<\/pee>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Discover COCO<\/a>\n <\/div>\n<\/p><\/div>\n<pee>In vascular dementias, the focus will be on executive and attentional functions, with exercises in planning, organization, and processing speed. In Lewy body dementias, significant fluctuations must be taken into account and the pace of sessions adapted. In frontotemporal dementias, behavioral disorders will require specific approaches in collaboration with specialized teams.<\/pee>\n<h3>Coordination of care and personalized follow-up<\/h3>\n<pee>When several professionals (speech therapist, psychomotor therapist, occupational therapist, nursing assistant) and the family are involved with the same person, the coordination and follow-up of stimulation activities are essential to ensure consistency and adjust approaches. A shared follow-up notebook allows for documenting stimulation sessions, observing the evolution of abilities, and facilitating communication among the various stakeholders.<\/pee>\n<pee>This coordination is particularly important because the effects of cognitive stimulation are cumulative and require regularity and a coherent progression to be optimal.<\/pee>\n<h2>9. What families need to know<\/h2>\n<pee>For the relatives of a person with dementia, understanding the diagnosis is often a painful but necessary step. Several essential points can help families better cope with this ordeal and optimize the support of their loved one.<\/pee>\n<div class=\"key-points\">\n<h4>\ud83d\udc99 Essential points for families<\/h4>\n<ul>\n<li><strong>The person remains a person.<\/strong> Even with severe dementia, the identity, emotions, preferences, and dignity of the person persist. Non-verbal communication remains possible and emotional bonds retain their importance.<\/li>\n<li><strong>Predictability helps.<\/strong> Stable routines, familiar environments, and clear time markers reduce anxiety and behavioral disorders. Organizing daily life becomes a therapeutic tool.<\/li>\n<li><strong>The caregiver needs support.<\/strong> Caregiver burnout is real and common. Respite time, psychological support, and support groups are essential to maintain the quality of care.<\/li>\n<li><strong>Early diagnosis changes everything.<\/strong> The earlier the diagnosis is made, the sooner measures can be implemented to maintain quality of life and plan for the future under the best conditions.<\/li>\n<\/ul><\/div>\n<pee>Families should also know that there are many resources for help and support: family associations (France Alzheimer, Lecma-Vaincre Alzheimer), respite platforms, specialized day care, training for caregivers, psychological support, financial assistance (APA, PCH). These resources are often unknown even though they can significantly improve the quality of life for everyone.<\/pee>\n<h2>10. When to consult? The importance of early diagnosis<\/h2>\n<pee>The early diagnosis of dementia \u2014 ideally as soon as the MCI (mild cognitive impairment) stage \u2014 represents a valuable intervention window. It allows for the implementation of cognitive stimulation strategies and medical management at the time when they are most effective, to anticipate important decisions (advance directives, organization of home care, legal and financial aspects), and to access clinical trials for emerging treatments.<\/pee>\n<pee>Unfortunately, the diagnosis of dementia is still too often delayed in France. On average, there is an 18-month gap between the first worrying symptoms and obtaining an accurate diagnosis. This diagnostic wandering period is detrimental to patients and their families, who remain in uncertainty and cannot access appropriate care.<\/pee>\n<div class=\"conseil-card\">\n<h4>\ud83d\udd0d Warning signs justifying a consultation<\/h4>\n<pee>Consult a general practitioner or a specialist if you observe in a loved one: repeated recent forgetfulness that disrupts daily life, difficulties in performing familiar tasks, language problems (finding words), frequent loss of objects in inappropriate places, unexplained mood or behavior changes, loss of initiative or progressive social withdrawal, difficulties in judgment or decision-making.<\/pee>\n <\/div>\n<pee>Validated cognitive tests often constitute the first step in evaluation. These tools, available online or in consultation, help to objectify initial concerns and motivate a specialized medical consultation. They do not replace a professional neuropsychological assessment, but provide a useful first reference for families hesitant to consult.<\/pee>\n<h2>11. Current treatments and future prospects<\/h2>\n<pee>Although there is currently no curative treatment for neurodegenerative dementias, several therapeutic approaches can slow progression, improve symptoms, and preserve quality of life. These treatments vary according to the form of dementia, highlighting the importance of accurate etiological diagnosis.<\/pee>\n<pee>In Alzheimer’s disease, specific drug treatments include cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and memantine. Their effectiveness is modest but real on cognitive functions and autonomy. In 2021, aducanumab (Aduhelm) was approved in the United States as the first treatment directly targeting amyloid plaques, although its effectiveness remains debated. Other anti-amyloid treatments are under development.<\/pee>\n<pee>Non-drug interventions play a central role: cognitive stimulation, adapted physical activity, maintaining social connections, managing the environment, supporting behavioral disorders. These approaches, well-documented scientifically, often constitute the core of daily care.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">\ud83d\udd2c Promising Research<\/div>\n<h4>The Hope of Tomorrow’s Treatments<\/h4>\n<pee>Research on dementia is progressing rapidly. In addition to anti-amyloid treatments, several avenues are being explored: immunotherapy, neuroprotection, gene therapies, deep brain stimulation, cellular therapies. Biomarkers now allow for the detection of the disease years before symptoms, paving the way for primary prevention.<\/pee>\n <\/div>\n<h2>12. The Role of Technology in Support<\/h2>\n<pee>New technologies are gradually transforming the support for people with dementia. Cognitive stimulation applications, connected objects for safety, orientation assistance systems, telemedicine, artificial intelligence for symptom monitoring: these innovations open new perspectives for maintaining autonomy and reassuring families.<\/pee>\n<pee>However, the use of these technologies must be adapted to the capabilities of each person and evolve with the progression of the disease. The challenge is to offer simple, intuitive, and truly useful tools, without creating frustration or digital exclusion.<\/pee>\n<div class=\"cta-box\">\n<h3>\ud83c\udfaf COCO: DYNSEO Innovation for Cognitive Support<\/h3>\n<pee>COCO represents the culmination of several years of research in adapted cognitive stimulation. Designed in collaboration with speech therapists and neuropsychologists, this digital solution offers more than 30 cognitive and physical activities tailored for people with neurocognitive disorders.<\/pee>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Try COCO for free<\/a><br \/>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n<\/p><\/div>\n<h2>13. Prevention and Modifiable Risk Factors<\/h2>\n<pee>Although age remains the primary risk factor for dementia, many modifiable factors can influence the risk of developing these diseases. The Lancet Commission on dementia prevention, intervention, and care has identified 12 modifiable risk factors responsible for about 40% of the overall risk.<\/pee>\n<pee>These factors include education level (early cognitive training), hearing loss (sensory stimulation), high blood pressure, obesity, smoking, depression, physical inactivity, diabetes, reduced social contacts, excessive alcohol consumption, head trauma, and air pollution. Addressing these factors, even late in life, can delay or prevent the onset of dementia.<\/pee>\n<div class=\"key-points\">\n<h4>\ud83c\udfaf Scientifically validated prevention strategies<\/h4>\n<ul>\n<li><strong>Regular physical activity:<\/strong> 150 minutes of moderate activity per week reduce the risk of cognitive decline by 20 to 30%<\/li>\n<li><strong>Continuous cognitive stimulation:<\/strong> new learning, reading, board games, social interactions<\/li>\n<li><strong>Mediterranean diet:<\/strong> rich in omega-3, antioxidants, fibers, low in saturated fats<\/li>\n<li><strong>Control of vascular factors:<\/strong> blood pressure, cholesterol, blood sugar<\/li>\n<li><strong>Maintaining social connections:<\/strong> combating isolation, participating in collective activities<\/li>\n<li><strong>Quality sleep:<\/strong> 7 to 8 hours per night, treatment of sleep disorders<\/li>\n<\/ul><\/div>\n<h2>14. The economic and societal impact of dementias<\/h2>\n<pee>Beyond medical and family aspects, dementias represent a major economic and societal challenge. In France, the total cost of caring for people with dementia is estimated at over 30 billion euros per year, including direct medical costs, medico-social care, and indirect costs related to the loss of productivity of caregivers.<\/pee>\n<pee>With the aging population, the number of affected individuals is expected to double by 2050, rising from 1.2 million today to over 2 million in France. This demographic change requires a profound adaptation of our health system and public policies.<\/pee>\n<pee>The challenge lies in the development of specialized care offerings, improvement of early diagnosis, support for family caregivers (who provide 80% of the assistance), adaptation of housing and transportation, training for professionals, and innovation in support. The national plan for neurodegenerative diseases 2014-2019 and its follow-ups aim to structure this collective response.<\/pee>\n<div class=\"faq-list\">\n<h2>Frequently asked questions about Alzheimer’s and dementia<\/h2>\n<div class=\"faq-item\">\n<div class=\"faq-q\">\n <span>Can you have Alzheimer’s without dementia?<\/span><br \/>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n<div class=\"faq-a\">\n <pee>Yes, during the preclinical phase (15-20 years) and the prodromal phase (MCI), Alzheimer’s lesions accumulate without causing actual dementia. The disorders remain mild and do not significantly affect autonomy. This is why we distinguish between Alzheimer’s disease (pathological process) and Alzheimer’s dementia (clinical syndrome).<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"faq-item\">\n<div class=\"faq-q\">\n <span>Are all memory losses in elderly people concerning?<\/span><br \/>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n<div class=\"faq-a\">\n <pee>No. Normal aging is accompanied by a physiological cognitive slowdown. What should raise concern: worsening forgetfulness, interference with daily activities, involves information<br \/>\n<script type=\"application\/ld+json\">\n[\n {\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? Guide Complet pour Comprendre | DYNSEO\",\n \"description\": \"Alzheimer vs D\u00e9mence - Comprendre & Informer - Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? 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overflow-x: auto;\n }\n\n .comparison-table th,\n .comparison-table td {\n padding: 12px 8px;\n font-size: 14px;\n }\n }\n\n @media (max-width: 400px) {\n .article-hero h1 {\n font-size: 1.4rem !important;\n }\n\n .intro-block,\n .conseil-card,\n .tip-box,\n .expert-box,\n .key-points,\n .faq-item,\n .stat-card,\n .cta-box {\n padding: 16px 12px !important;\n }\n\n .container {\n padding: 8px !important;\n }\n }\n \n\n<style>\n\/* DAG-RESPONSIVE-FIX *\/\n@media (max-width: 768px) {\n p, li { text-align: left !important; word-spacing: normal !important; hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; }\n .container { padding: 12px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<\/head>\n<body><section class=\"article-hero\">\n <div class=\"article-hero-inner\">\n <nav class=\"article-breadcrumb\">\n <a href=\"https:\/\/www.dynseo.com\">Home<\/a> > \n <a href=\"https:\/\/www.dynseo.com\/blog\">Blog<\/a> > \n <span>Alzheimer vs Dementia<\/span>\n <\/nav>\n \n <span class=\"article-category\">Understand & Inform<\/span>\n \n <h1>Alzheimer or Dementia: <span class=\"hl\">What Difference?<\/span> Complete Guide to Understanding<\/h1>\n \n <div class=\"article-meta\">\n <span>\ud83d\udcc5 April 2026<\/span>\n <span>\u23f1\ufe0f 15 min read<\/span>\n <span>\ud83d\udc65 Families & Professionals<\/span>\n <span class=\"stars\">\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n <\/div>\n <div class=\"article-hero-curve\"><\/div>\n <\/section>\n\n <div class=\"article-body\">\n <div class=\"container\">\n<div class=\"intro-block\">\n <p>The terms \u201cAlzheimer\u201d and \u201cdementia\u201d are often used interchangeably in our daily lives, creating persistent confusion. However, understanding their difference is not just a simple semantic exercise: it is an essential key to obtaining the correct diagnosis, accessing appropriate treatments, and better supporting a loved one. Alzheimer's disease is certainly the most common form of dementia, but it is only one cause among others. This fundamental distinction directly influences management, progression, and improvement prospects. In this comprehensive guide, we clearly explain this complex relationship, the different forms of dementia, their biological mechanisms, and their concrete implications for patients and their families.<\/p>\n <\/div>\n\n <div class=\"stats-grid\">\n <div class=\"stat-card\">\n <span class=\"number\">60-70%<\/span>\n <div class=\"label\">Of dementia cases are attributable to Alzheimer's disease<\/div>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">55M<\/span>\n <div class=\"label\">People affected by dementia worldwide (WHO, 2023)<\/div>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">200+<\/span>\n <div class=\"label\">Diseases and conditions that can cause a dementia syndrome<\/div>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">1M<\/span>\n <div class=\"label\">People affected by dementia in France<\/div>\n <\/div>\n <\/div>\n\n <h2>1. Dementia: a syndrome, not a disease<\/h2>\n <p>The first thing to understand is that dementia is not a disease in itself, but a syndrome \u2014 that is, a set of symptoms that can have multiple causes. The official medical term, preferred today in the scientific literature, is major neurocognitive disorder (according to the DSM-5, the Diagnostic and Statistical Manual of Mental Disorders). But the word \u201cdementia\u201d remains widely used in clinical practice and among the general public.<\/p>\n\n <p>For a dementia syndrome to be diagnosed, three conditions must be met: a significant cognitive decline compared to the previous level, in at least one area (memory, language, attention, praxis, executive functions, perception); this decline must be severe enough to interfere with daily activities and autonomy; and it must not be better explained by another disorder (depression, delirium, medication effect).<\/p>\n\n <p>Dementia can affect different cognitive functions depending on the underlying cause and the brain regions affected. The main areas involved are memory (especially episodic memory \u2014 memories of lived events), language (finding words, understanding, naming objects), executive functions (planning, organizing, solving problems), praxis (coordinating complex gestures), visuospatial functions (navigating in space), and social cognition (recognizing emotions, understanding social situations).<\/p>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">\ud83d\udca1 Expert Point<\/div>\n<div class=\"expert-box-title\">The fundamental distinction in clinical neurology<\/div>\n <p>\u201cDementia is a clinical syndrome. Alzheimer's disease is a specific neuropathological disease. One is a container, the other is a content among others.\u201d This distinction, although technical, has major practical implications for diagnosis and management.<\/p>\n <\/div>\n\n <h2>2. Alzheimer's disease: the most common cause<\/h2>\n <p>Alzheimer's disease is a specific neurodegenerative disease, characterized by precise and progressive brain lesions. It accounts for between 60 and 70% of all dementia cases, which explains the frequent confusion between the two terms. However, while every Alzheimer's disease leads to dementia in its advanced stage, not every dementia is Alzheimer's disease.<\/p>\n\n <p>From a neuropathological perspective, Alzheimer's disease is defined by two types of characteristic lesions, highlighted by Alo\u00efs Alzheimer himself in 1906. These lesions spread according to a relatively predictable anatomical pattern \u2014 described by Braak stages \u2014 starting with the hippocampus and entorhinal regions (hence the early impairment of episodic memory), and then gradually extending to the entire cortex.<\/p>\n\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd2c The two biological markers of Alzheimer's disease<\/div>\n <p><strong>Amyloid plaques (or senile plaques):<\/strong> extracellular deposits of beta-amyloid protein fragments that accumulate in the spaces between neurons. They disrupt synaptic communication and induce a local inflammatory reaction. These plaques appear many years \u2014 sometimes decades \u2014 before the first clinical symptoms.<\/p>\n <p><strong>Neurofibrillary tangles:<\/strong> intracellular accumulations of abnormally phosphorylated tau protein that form twisted filaments inside neurons. They disrupt the transport of nutrients and signals within the neuron, leading to its progressive death.<\/p>\n <\/div>\n\n <p>Alzheimer's disease typically progresses through several phases. A silent preclinical phase, which can last 15 to 20 years, during which lesions accumulate without causing noticeable symptoms. A prodromal phase (or MCI \u2014 Mild Cognitive Impairment \u2014 amnesic), characterized by noticeable episodic memory disorders but without significant impact on autonomy. Then the phase of established dementia, mild, moderate, and then severe, with an increasing impact on daily living activities and autonomy.<\/p>\n\n <h2>3. Other forms of dementia: beyond Alzheimer's<\/h2>\n <p>Alzheimer's disease is the most well-known, but other conditions can cause a dementia syndrome, with different cognitive profiles, progressions, and management approaches. Knowing them allows for a better understanding of diagnoses and adapting support.<\/p>\n\n <h3>Vascular dementia (15-20% of cases)<\/h3>\n <p>Vascular dementia is caused by brain lesions of vascular origin: cerebral infarctions (Stroke), multiple micro-infarctions (leukoaraiosis), or chronic cerebral perfusion disorders. Unlike Alzheimer's disease, its progression is often stair-stepped \u2014 worsening in stages after each new vascular episode \u2014 rather than gradual and continuous.<\/p>\n\n <p>Executive functions and processing speed are often more affected than episodic memory at the onset. Vascular risk factors (hypertension, diabetes, atrial fibrillation) are the main preventive levers. Management largely relies on controlling these cardiovascular risk factors.<\/p>\n\n <h3>Lewy body dementia (10-15% of cases)<\/h3>\n <p>Lewy body dementia is characterized by abnormal deposits of alpha-synuclein protein (the \"Lewy bodies\") in neurons. It presents a distinct clinical profile with significant fluctuations in cognitive performance (sometimes from one day to the next), early and recurrent visual hallucinations, a parkinsonian syndrome (slowness, rigidity, balance disorders), and a particular sensitivity to certain neuroleptics that can be dangerous for these patients.<\/p>\n\n <p>Dementia associated with Parkinson's disease shares similar mechanisms. These forms require specialized management, particularly due to specific medication risks.<\/p>\n\n <h3>Frontotemporal dementia (5-10% of cases)<\/h3>\n <p>Frontotemporal dementia (FTD) is a degeneration of the frontal and temporal lobes of the brain. It typically affects younger people (between 45 and 65 years old) than other dementias. Its profile is characteristic: changes in personality and behavior (disinhibition, apathy, socially inappropriate behaviors) or language disorders (primary progressive aphasia) dominate the clinical picture, while episodic memory is preserved for a long time.<\/p>\n\n <p>This atypical profile can delay diagnosis, with families often consulting first for psychiatric or relational disorders before the neurological nature is recognized.<\/p>\n<div class=\"comparison-table\">\n <table>\n <thead>\n <tr>\n <th>Type of dementia<\/th>\n <th>Frequency<\/th>\n <th>Dominant early symptoms<\/th>\n <th>Evolution<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td>Alzheimer's disease<\/td>\n <td>60-70 %<\/td>\n <td>Episodic memory (recent forgetfulness)<\/td>\n <td>Progressive and continuous<\/td>\n <\/tr>\n <tr>\n <td>Vascular dementia<\/td>\n <td>15-20 %<\/td>\n <td>Executive functions, slowness<\/td>\n <td>In stages (Stroke)<\/td>\n <\/tr>\n <tr>\n <td>Lewy body<\/td>\n <td>10-15 %<\/td>\n <td>Hallucinations, fluctuations, parkinsonism<\/td>\n <td>Progressive with fluctuations<\/td>\n <\/tr>\n <tr>\n <td>Fronto-temporal<\/td>\n <td>5-10 %<\/td>\n <td>Behavior, personality, language<\/td>\n <td>Progressive (faster)<\/td>\n <\/tr>\n <tr>\n <td>Mixed forms<\/td>\n <td>10-20 %<\/td>\n <td>Variable depending on components<\/td>\n <td>Progressive<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n <h2>4. Mixed forms and reversible dementias<\/h2>\n <p>It is common, especially among very elderly people, to find mixed forms combining Alzheimer's lesions and vascular lesions. These mixed forms represent a significant proportion of dementias in old age and sometimes complicate the establishment of a precise etiological diagnosis.<\/p>\n\n <p>Moreover, some causes of cognitive syndrome are potentially reversible: hypothyroidism, vitamin B12 deficiency, severe depression (depressive pseudo-dementia), normal pressure hydrocephalus, iatrogenic effects of certain medications, infections, electrolyte imbalances. This is why a complete biological and clinical assessment is essential before any diagnosis of neurodegenerative dementia \u2014 to avoid missing a treatable cause.<\/p>\n\n <div class=\"tip-box\">\n<div class=\"tip-box-label\">\u26a0\ufe0f Attention<\/div>\n <h4>Do not confuse with normal aging<\/h4>\n <p>Forgetting where one has put their keys is common at any age. What distinguishes normal aging from dementia is the severity, progression, and impact on daily life. In normal cognitive aging, it may take longer to find a word or information, but one eventually succeeds. In dementia, forgetfulness progressively worsens and genuinely interferes with usual activities. A persistent doubt deserves a professional evaluation.<\/p>\n <\/div>\n\n <h2>5. How do we distinguish between different dementias?<\/h2>\n <p>The differential diagnosis of dementias \u2014 that is, distinguishing which form of dementia is involved \u2014 is one of the most complex tasks in neurology and geriatrics. It relies on several complementary steps that require specialized expertise and sophisticated diagnostic tools.<\/p>\n\n <p>The diagnostic evaluation of dementia typically includes a thorough clinical interview (medical history, symptom history, medical and family history), a neuropsychological assessment that objectively characterizes the profile of cognitive impairments (memory, language, attention, executive functions, praxis), a biological assessment (to rule out treatable causes), brain imaging (mainly MRI, sometimes PET scan) allowing visualization of regional atrophies, vascular lesions, or amyloid deposits, and sometimes an analysis of cerebrospinal fluid (Alzheimer's biomarkers: beta-amyloid, tau, phospho-tau) or genetic tests in familial forms.<\/p>\n\n <h3>The role of neuropsychological evaluation<\/h3>\n <p>The neuropsychological evaluation is central to the diagnosis of dementias. It not only confirms the existence of cognitive decline and measures its severity but also characterizes the profile of impairments \u2014 which significantly guides the etiological diagnosis. An early and predominant impairment of episodic memory (with gradual forgetfulness) is characteristic of Alzheimer's disease. Predominant executive and attentional disorders point towards vascular dementia. Behavioral and language disorders with relatively preserved memory suggest frontotemporal dementia.<\/p>\n\n <p>This evaluation, conducted by a specialized neuropsychologist, includes a battery of standardized tests systematically exploring all cognitive domains. It often constitutes the key element of the differential diagnosis and allows for monitoring changes over time.<\/p>\n<div class=\"conseil-card\">\n <h4>\ud83d\udea6 The DYNSEO Alert Signals Card<\/h4>\n <p>The DYNSEO Alert Signals Card is a practical tool designed to help families and professionals quickly identify behaviors and cognitive difficulties that warrant a medical evaluation. It allows for structuring the observation of symptoms without alarmism, so as not to miss a valuable intervention window. Consult it before any medical appointment to best prepare for the discussion with professionals.<\/p>\n <\/div>\n\n <h2>6. Alzheimer's disease and dementia: key differences to remember<\/h2>\n <p>For a clear understanding, let\u2019s summarize the essential distinctions between Alzheimer's disease and dementia. These nuances, although seemingly technical, have major practical implications for patients, families, and healthcare professionals.<\/p>\n\n <div class=\"key-points\">\n <h4>\ud83d\udccc The relationship between dementia and Alzheimer's disease in 5 key points<\/h4>\n <ul>\n <li><strong>Dementia is a syndrome, Alzheimer's is a disease.<\/strong> Dementia refers to a set of severe cognitive symptoms; Alzheimer's is one of the diseases that can cause this syndrome.<\/li>\n <li><strong>Alzheimer's is the most common cause of dementia (60-70%), but not the only one.<\/strong> Vascular dementias, Lewy body dementia, frontotemporal dementias, and mixed dementias represent other significant cases.<\/li>\n <li><strong>Not every Alzheimer's disease necessarily leads to dementia from the start.<\/strong> There are preclinical and prodromal phases (MCI) before the stage of actual dementia.<\/li>\n <li><strong>The precise etiological diagnosis is crucial.<\/strong> It conditions the management, available treatments, and prognosis. Some effective medications in Alzheimer's are contraindicated in Lewy body dementia.<\/li>\n <li><strong>The confusion between the two terms can delay diagnosis.<\/strong> Atypical symptoms (behavioral, language, early motor) should guide towards other etiologies than just Alzheimer's disease.<\/li>\n <\/ul>\n <\/div>\n\n <p>This distinction also has important implications for medical research and the development of new treatments. Clinical trials are generally specific to a particular etiology, and the biomarkers used for monitoring differ according to the forms of dementia.<\/p>\n\n <h2>7. Alzheimer's disease in detail: symptoms and progression<\/h2>\n <p>Since Alzheimer's disease accounts for the majority of dementia cases, it is useful to describe its clinical picture and typical progression more precisely. This knowledge helps families better understand what lies ahead and to adapt their support.<\/p>\n\n <p>Alzheimer's disease typically progresses in three main stages, with duration varying considerably from person to person (on average 8 to 10 years between diagnosis and death, but with significant variations from 3 to 20 years depending on the age of onset, general condition, and access to care).<\/p>\n\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Mild stage (beginning of the disease)<\/div>\n <p>Forgetting mainly concerns recent events: conversations from the day before, appointments, names of recently met people. The person may get lost in unfamiliar places. They may have difficulty finding their words (word-finding difficulties). They remain autonomous for most daily activities but may need help with complex tasks (financial management, planning). They are often aware of their difficulties, which can lead to anxiety and reactive depression.<\/p>\n <\/div>\n\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Moderate stage<\/div>\n <p>Forgetting extends to older events. Difficulties with temporal-spatial orientation appear (not knowing the date, getting lost in familiar places). Language becomes simplified. Behavioral issues may arise: agitation, wandering, sleep disturbances, sometimes hallucinations. Dependence for daily activities increases (dressing, hygiene, meals). The burden on the primary caregiver becomes significant.<\/p>\n <\/div>\n\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Severe stage<\/div>\n <p>Verbal communication becomes very limited. Recognition of loved ones may be lost. The person becomes completely dependent for all care. Physical complications arise (swallowing difficulties, infections, immobilization). Psychological and emotional life remains present even at this advanced stage: touch, music, familiar voice, positive emotions can still be felt and communicated.<\/p>\n <\/div>\n\n <p>It is crucial to understand that this evolution is not linear and that many factors can influence it: cognitive and social stimulation, physical activity, quality of support, management of associated disorders (depression, agitation), medical comorbidities.<\/p>\n\n <h2>8. Support and cognitive stimulation: adapt to the cause<\/h2>\n <p>A precise understanding of the etiological diagnosis is not just academic: it has direct implications for support and cognitive stimulation. Each form of dementia requires specific approaches to optimize the effectiveness of non-drug interventions.<\/p>\n\n <p>In Alzheimer's disease, cognitive stimulation is one of the best-documented non-drug interventions to maintain functional abilities and quality of life. It leverages long-preserved memories (implicit memory, procedural memory, emotional memory) to maintain engagement, pleasure, and self-esteem. The most effective activities are those that are individualized, regular, adapted to the current cognitive level, and that preserve a sense of competence.<\/p>\n\n <div class=\"cta-box\">\n <h3>\ud83e\udde9 COCO THINKS and COCO MOVES \u2014 DYNSEO specialized applications<\/h3>\n <p>COCO THINKS and COCO MOVES are cognitive stimulation applications developed by DYNSEO specifically for people with cognitive disorders and their caregivers. Their adapted interface, progressive exercises, and holistic approach (cognitive + physical) make them reference tools for daily support.<\/p>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Discover COCO<\/a>\n <\/div>\n <\/div>\n\n <p>In vascular dementias, the focus will be on executive and attentional functions, with exercises in planning, organization, and processing speed. In Lewy body dementias, significant fluctuations must be taken into account and the pace of sessions adapted. In frontotemporal dementias, behavioral disorders will require specific approaches in collaboration with specialized teams.<\/p>\n\n <h3>Coordination of care and personalized follow-up<\/h3>\n <p>When several professionals (speech therapist, psychomotor therapist, occupational therapist, nursing assistant) and the family are involved with the same person, the coordination and follow-up of stimulation activities are essential to ensure consistency and adjust approaches. A shared follow-up notebook allows for documenting stimulation sessions, observing the evolution of abilities, and facilitating communication among the various stakeholders.<\/p>\n\n <p>This coordination is particularly important because the effects of cognitive stimulation are cumulative and require regularity and a coherent progression to be optimal.<\/p>\n\n <h2>9. What families need to know<\/h2>\n <p>For the relatives of a person with dementia, understanding the diagnosis is often a painful but necessary step. Several essential points can help families better cope with this ordeal and optimize the support of their loved one.<\/p>\n<div class=\"key-points\">\n <h4>\ud83d\udc99 Essential points for families<\/h4>\n <ul>\n <li><strong>The person remains a person.<\/strong> Even with severe dementia, the identity, emotions, preferences, and dignity of the person persist. Non-verbal communication remains possible and emotional bonds retain their importance.<\/li>\n <li><strong>Predictability helps.<\/strong> Stable routines, familiar environments, and clear time markers reduce anxiety and behavioral disorders. Organizing daily life becomes a therapeutic tool.<\/li>\n <li><strong>The caregiver needs support.<\/strong> Caregiver burnout is real and common. Respite time, psychological support, and support groups are essential to maintain the quality of care.<\/li>\n <li><strong>Early diagnosis changes everything.<\/strong> The earlier the diagnosis is made, the sooner measures can be implemented to maintain quality of life and plan for the future under the best conditions.<\/li>\n <\/ul>\n <\/div>\n\n <p>Families should also know that there are many resources for help and support: family associations (France Alzheimer, Lecma-Vaincre Alzheimer), respite platforms, specialized day care, training for caregivers, psychological support, financial assistance (APA, PCH). These resources are often unknown even though they can significantly improve the quality of life for everyone.<\/p>\n\n <h2>10. When to consult? The importance of early diagnosis<\/h2>\n <p>The early diagnosis of dementia \u2014 ideally as soon as the MCI (mild cognitive impairment) stage \u2014 represents a valuable intervention window. It allows for the implementation of cognitive stimulation strategies and medical management at the time when they are most effective, to anticipate important decisions (advance directives, organization of home care, legal and financial aspects), and to access clinical trials for emerging treatments.<\/p>\n\n <p>Unfortunately, the diagnosis of dementia is still too often delayed in France. On average, there is an 18-month gap between the first worrying symptoms and obtaining an accurate diagnosis. This diagnostic wandering period is detrimental to patients and their families, who remain in uncertainty and cannot access appropriate care.<\/p>\n<div class=\"conseil-card\">\n <h4>\ud83d\udd0d Warning signs justifying a consultation<\/h4>\n <p>Consult a general practitioner or a specialist if you observe in a loved one: repeated recent forgetfulness that disrupts daily life, difficulties in performing familiar tasks, language problems (finding words), frequent loss of objects in inappropriate places, unexplained mood or behavior changes, loss of initiative or progressive social withdrawal, difficulties in judgment or decision-making.<\/p>\n <\/div>\n\n <p>Validated cognitive tests often constitute the first step in evaluation. These tools, available online or in consultation, help to objectify initial concerns and motivate a specialized medical consultation. They do not replace a professional neuropsychological assessment, but provide a useful first reference for families hesitant to consult.<\/p>\n\n <h2>11. Current treatments and future prospects<\/h2>\n <p>Although there is currently no curative treatment for neurodegenerative dementias, several therapeutic approaches can slow progression, improve symptoms, and preserve quality of life. These treatments vary according to the form of dementia, highlighting the importance of accurate etiological diagnosis.<\/p>\n\n <p>In Alzheimer's disease, specific drug treatments include cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and memantine. Their effectiveness is modest but real on cognitive functions and autonomy. In 2021, aducanumab (Aduhelm) was approved in the United States as the first treatment directly targeting amyloid plaques, although its effectiveness remains debated. Other anti-amyloid treatments are under development.<\/p>\n\n <p>Non-drug interventions play a central role: cognitive stimulation, adapted physical activity, maintaining social connections, managing the environment, supporting behavioral disorders. These approaches, well-documented scientifically, often constitute the core of daily care.<\/p>\n\n <div class=\"tip-box\">\n<div class=\"tip-box-label\">\ud83d\udd2c Promising Research<\/div>\n <h4>The Hope of Tomorrow's Treatments<\/h4>\n <p>Research on dementia is progressing rapidly. In addition to anti-amyloid treatments, several avenues are being explored: immunotherapy, neuroprotection, gene therapies, deep brain stimulation, cellular therapies. Biomarkers now allow for the detection of the disease years before symptoms, paving the way for primary prevention.<\/p>\n <\/div>\n\n <h2>12. The Role of Technology in Support<\/h2>\n <p>New technologies are gradually transforming the support for people with dementia. Cognitive stimulation applications, connected objects for safety, orientation assistance systems, telemedicine, artificial intelligence for symptom monitoring: these innovations open new perspectives for maintaining autonomy and reassuring families.<\/p>\n\n <p>However, the use of these technologies must be adapted to the capabilities of each person and evolve with the progression of the disease. The challenge is to offer simple, intuitive, and truly useful tools, without creating frustration or digital exclusion.<\/p>\n\n <div class=\"cta-box\">\n <h3>\ud83c\udfaf COCO: DYNSEO Innovation for Cognitive Support<\/h3>\n <p>COCO represents the culmination of several years of research in adapted cognitive stimulation. Designed in collaboration with speech therapists and neuropsychologists, this digital solution offers more than 30 cognitive and physical activities tailored for people with neurocognitive disorders.<\/p>\n <div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Try COCO for free<\/a>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n <\/div>\n\n <h2>13. Prevention and Modifiable Risk Factors<\/h2>\n <p>Although age remains the primary risk factor for dementia, many modifiable factors can influence the risk of developing these diseases. The Lancet Commission on dementia prevention, intervention, and care has identified 12 modifiable risk factors responsible for about 40% of the overall risk.<\/p>\n\n <p>These factors include education level (early cognitive training), hearing loss (sensory stimulation), high blood pressure, obesity, smoking, depression, physical inactivity, diabetes, reduced social contacts, excessive alcohol consumption, head trauma, and air pollution. Addressing these factors, even late in life, can delay or prevent the onset of dementia.<\/p>\n<div class=\"key-points\">\n <h4>\ud83c\udfaf Scientifically validated prevention strategies<\/h4>\n <ul>\n <li><strong>Regular physical activity:<\/strong> 150 minutes of moderate activity per week reduce the risk of cognitive decline by 20 to 30%<\/li>\n <li><strong>Continuous cognitive stimulation:<\/strong> new learning, reading, board games, social interactions<\/li>\n <li><strong>Mediterranean diet:<\/strong> rich in omega-3, antioxidants, fibers, low in saturated fats<\/li>\n <li><strong>Control of vascular factors:<\/strong> blood pressure, cholesterol, blood sugar<\/li>\n <li><strong>Maintaining social connections:<\/strong> combating isolation, participating in collective activities<\/li>\n <li><strong>Quality sleep:<\/strong> 7 to 8 hours per night, treatment of sleep disorders<\/li>\n <\/ul>\n <\/div>\n\n <h2>14. The economic and societal impact of dementias<\/h2>\n <p>Beyond medical and family aspects, dementias represent a major economic and societal challenge. In France, the total cost of caring for people with dementia is estimated at over 30 billion euros per year, including direct medical costs, medico-social care, and indirect costs related to the loss of productivity of caregivers.<\/p>\n\n <p>With the aging population, the number of affected individuals is expected to double by 2050, rising from 1.2 million today to over 2 million in France. This demographic change requires a profound adaptation of our health system and public policies.<\/p>\n\n <p>The challenge lies in the development of specialized care offerings, improvement of early diagnosis, support for family caregivers (who provide 80% of the assistance), adaptation of housing and transportation, training for professionals, and innovation in support. The national plan for neurodegenerative diseases 2014-2019 and its follow-ups aim to structure this collective response.<\/p>\n\n <div class=\"faq-list\">\n <h2>Frequently asked questions about Alzheimer's and dementia<\/h2>\n \n <div class=\"faq-item\">\n <div class=\"faq-q\">\n <span>Can you have Alzheimer's without dementia?<\/span>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n <div class=\"faq-a\">\n <p>Yes, during the preclinical phase (15-20 years) and the prodromal phase (MCI), Alzheimer's lesions accumulate without causing actual dementia. The disorders remain mild and do not significantly affect autonomy. This is why we distinguish between Alzheimer's disease (pathological process) and Alzheimer's dementia (clinical syndrome).<\/p>\n <\/div>\n <\/div>\n\n <div class=\"faq-item\">\n <div class=\"faq-q\">\n <span>Are all memory losses in elderly people concerning?<\/span>\n <span class=\"faq-icon\">+<\/span>\n <\/div>\n<div class=\"faq-a\">\n <p>No. Normal aging is accompanied by a physiological cognitive slowdown. What should raise concern: worsening forgetfulness, interference with daily activities, involves information\n<script type=\"application\/ld+json\">\n[\n {\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? Guide Complet pour Comprendre | DYNSEO\",\n \"description\": \"Alzheimer vs D\u00e9mence - Comprendre & Informer - Alzheimer ou D\u00e9mence : Quelle Diff\u00e9rence ? 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