MS is a disease that can affect your brain and spinal cord, and can cause problems ... Most people with multiple sclerosis (MS) have a type called relapsing-remitting MS (RRMS).

There’s no single test that can diagnose multiple sclerosis. Instead ... the myelin that protects the nerve fibers in the spinal cord and brain. If you or someone you love is experiencing ...

The name multiple sclerosis refers to scars (scleroses—better known as plaques or lesions) particularly in the white matter of the brain and spinal cord, which is mainly composed of myelin.