The Stages Of Multiple Sclerosis
MS occurs when a person’s immune system attacks myelin (the fatty sheath that insulates nerve fibers) within their central nervous system (CNS). The CNS is composed of your brain, spinal cord, and the optic nerves of your eyes. As a demyelinating disease—which is any condition that develops as a result of myelin damage—the transmission of nerve signals between the CNS and the rest of the body is impaired in MS....