A chronic, degenerative disease affecting the nervous system…

A chronic, degenerative disease affecting the nervous system that generally affects young adults from about 20-40 years of age, and is generally characterized by a destruction of the myelin sheaths, or outer coverings around nerve fibers that case motor and sensory nerve impulses, muscular weakness and incoordination, tremors, paralysis, vision problems, and abnormal, rapid eyeball movements is known as