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Multiple Sclerosis

Five things you need to know about multiple sclerosis

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Multiple sclerosis (MS) can happen to just about anyone.

The central nervous system disorder affects your brain and spinal cord. But it spares the nerves and muscles that lead away from the spinal cord. About 400,000 people in the United States have MS.

MS is a long-term illness. Infection-fighting white blood cells enter the nervous system and cause injury by stripping off the myelin sheath that protects nerves. When this happens, the nerves cannot conduct electricity as well as they should. This causes symptoms.

MS varies from person to person. There's no standard set of symptoms. But many...

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