“In MS, the immune system attacks the protective sheath that covers nerve fibers, known as myelin. This interrupts communication between the brain and the rest of the body. Eventually, the disease can cause permanent damage of the nerve fibers.
There’s no cure for multiple sclerosis. However, there are treatments to help speed the recovery from attacks, modify the course of the disease and manage symptoms.”
MAYO CLINIC (Multiple sclerosis – Symptoms and causes – Mayo Clinic)