Multiple sclerosis is an autoimmune disease that affects the brain and spinal cord (central nervous system).Alternative Names
MS; Demyelinating diseaseCauses, incidence, and risk factors
Multiple sclerosis (MS) affects women more than men. The disorder is most commonly diagnosed between ages 20 and 40, but can be seen at any age.
MS is caused by damage to the myelin sheath, the protective covering that surrounds nerve cells. When this nerve covering is damaged, nerve impulses are slowed...