Nov 8, 2025 · Multiple sclerosis, also called MS, is a disease in which the immune system attacks the covering surrounding the nerves in your brain and spinal cord. This covering is called the myelin sheath.

May 30, 2025 · In MS, the immune system attacks the protective sheath, called myelin, that covers nerve fibers. Damage to the myelin causes communication problems between your brain and the rest …

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