Multiple Sclerosis (MS)

Multiple Sclerosis (MS)

Multiple sclerosis (MS) is a chronic, often disabling disease of the central nervous system (brain, spinal cord and optic nerves) that interferes with the brain’s ability to send and receive messages. Multiple Sclerosis affects women more frequently than men and in most cases, is diagnosed between the ages of 20 and 40. It is a result of an abnormal immune system response that damages the protective covering (myelin) of nerve fibers in many areas of the central nervous system. This damage to myelin disrupts nerve conduction, which causes the various symptoms of multiple sclerosis.


National Multiple Sclerosis Society (Main/Advocacy Office)
1100 New York Ave NW, Suite 660
Washington, DC 20005
Phone: 800-344-4867

National Multiple Sclerosis Society
Greater New England Chapter
101A First Avenue, Suite #6
Waltham, MA 02451-1115
Phone: 800-344-4867

Other Information:

Esclerosis múltiple (para Niños): KidsHealth – Questions and answers in Spanish.

Biogen’s  Above MS – Advice starting therapy, medicine information & educational materials.
Phone: 800-456-2255

Healthline’s Multiple Sclerosis Center

MedlinePlus (US National Library of Medicine) Multiple Sclerosis Information

National Institute of Neurological Disorders Multiple Sclerosis Information

Fact Sheet last updated on: 3/21/2023


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