Nov 8, 2025Β Β· 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, 2025Β Β· 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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