What is multiple sclerosis (ms)? Ms is a disease that can affect your brain and spinal cord, and can cause problems with vision, balance, muscle control. Multiple sclerosis (ms) - learn about the causes, symptoms, diagnosis & treatment from the msd manuals - medical consumer version.

Multiple sclerosis, or ms, is a complex disease that affects countless individuals around the world. Learn what causes ms, the different types of ms, and more. Multiple sclerosis (ms) is a long-lasting (chronic) disease of the central nervous system. It is thought to be an autoimmune disorder, a condition in which the body attacks itself by mistake.