Multiple sclerosis (MS): symptoms and management
MS affects 120,000 people in France, mainly young women. A complex autoimmune disease, its symptoms vary from person to person and evolve unpredictably. This guide provides an overview.
1. Mechanism and definition
MS is an autoimmune disease in which the immune system mistakenly attacks the myelin, the insulating sheath that surrounds the nerve fibers of the central nervous system (brain and spinal cord). This attack forms areas of demyelination that disrupt or block the transmission of nerve signals. Over time, some nerve fibers are also irreparably damaged — this is neurodegeneration that leads to progressive disability.
MS preferentially affects women (sex ratio 3:1), with a peak diagnosis between the ages of 20 and 40. Its etiology is multifactorial: genetic predisposition (25% concordance in monozygotic twins), environmental factors (vitamin D deficiency, smoking, Epstein-Barr virus infection), and immunological factors.
2. Clinical forms
| Form | Frequency | Evolution |
|---|---|---|
| Relapsing-remitting (RR) | 85% | Relapses separated by periods of stability (partial or complete remissions) |
| Primary progressive (PP) | 15% | Progressive deterioration from the start, without distinct relapses |
| Secondary progressive (SP) | Variable | Evolution from an RR form to continuous progression |
3. Symptoms
MS fatigue: much more than ordinary fatigue
Present in 80% of patients, fatigue in MS is a deep neurological fatigue that is often disproportionate to effort. It is not relieved by rest, worsens with heat (Uhthoff phenomenon — heat further slows down demyelinated nerve conduction), and can occur even on remission days. It is often the most disabling symptom in daily and professional life.
Classic symptoms
Sensory disorders (tingling, numbness, neuropathic pain) are often the first signs. Visual disorders — optic neuritis with blurred vision and eye pain — affect 20-25% of patients in their first relapse. Spasticity (rigid and contracted muscles), balance disorders, and muscle fatigue characterize the progression.
Cognitive disorders: the invisible disability of MS
40 to 70% of people with MS experience cognitive disorders: slowed information processing (tasks taking longer), working memory disorders (difficulty retaining and manipulating information), divided attention disorders (difficulty managing multiple tasks simultaneously), and executive function disorders. These disorders are often invisible but have a profound impact on employment and relationships.
4. Treatments
The management of MS relies on three axes. Disease-modifying treatments (interferons, glatiramer acetate, natalizumab, ocrelizumab) reduce the frequency and severity of relapses and slow progression — but do not cure the disease. Relapse treatment (corticosteroids by infusion) accelerates recovery during acute episodes. Rehabilitation and symptomatic support (physiotherapy, occupational therapy, speech therapy, neuropsychology) maintain quality of life and autonomy.
🧠 DYNSEO training and tools for MS
• Training "MS and daily life" — maintain autonomy
• Training "MS in institutions" — adapt your practice
• Training "Fatigue and cognitive disorders in MS"
• DYNSEO Memory Test — assess cognitive impact
• 62 cognitive stimulation tools
FAQ
What is MS?
An autoimmune disease of the central nervous system in which the immune system attacks the myelin. It affects 120,000 people in France, mainly young women.
What are the forms of MS?
Relapsing-remitting (85%, relapses and remissions), primary progressive (15%, continuous deterioration), and secondary progressive (evolution from the RR form).
Is MS fatigue different?
Yes — it is a deep neurological fatigue, disproportionate, not relieved by rest, worsened by heat. It affects 80% of patients and is often the most disabling symptom.
Does MS affect cognition?
Yes — 40-70% of patients experience cognitive disorders: slowing, working memory, divided attention. These disorders are often invisible but profoundly impact employment and social life.
Is MS curable?
Not yet. Disease-modifying treatments reduce the frequency of relapses and slow progression. Research is advancing on remyelination.
Conclusion: living with MS
MS is a complex, unpredictable, and multidimensional disease. Its cognitive symptoms, often overlooked in favor of visible motor symptoms, deserve special attention and specialized support. DYNSEO offers training for patients, relatives, and professionals, as well as cognitive stimulation tools tailored to the specific needs of people with MS.
