In multiple sclerosis, or MS, your immune system attacks myelin, the fatty tissue that surrounds and protects nerve fibers. This causes scar tissue (sclerosis, also called plaque or lesions) to form ...

Symptoms of MS may be mild or severe, of long duration or short, and may appear in various combinations, depending on the area of the nervous system affected. Following a relapse, complete or partial ...

Doctors now have new tools to diagnose multiple sclerosis, or MS, earlier, sometimes even before a person experiences the symptoms of the autoimmune disease. MS is a disease where the immune system ...

People with late-onset MS, who experience their first symptoms after age 50, tend to have faster disability progression, ...