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    Multiple Sclerosis (MS) - Cause

    The cause of multiple sclerosis (MS) is unknown. Because a person's risk of MS is slightly higher in some families when a relative has MS, there may be a genetic link. For more information, see What Increases Your Risk.

    Some research suggests that where you lived as a child and viral illnesses you have had could be triggers for MS later in life. But these links have not been proved.

    Recommended Related to Multiple Sclerosis

    Primary Progressive Multiple Sclerosis

    A person with primary progressive multiple sclerosis (PPMS) may first see a doctor because of leg weakness or trouble walking. Those are the most common symptoms of this type of MS. Once it starts, PPMS gets worse over time. How fast it happens or how much disability a person will have varies a lot, so it’s hard to predict. Unlike some other types of MS, there are no relapses or remissions. Ten percent to 15% of people with multiple sclerosis have this type of the disease. They usually get their...

    Read the Primary Progressive Multiple Sclerosis article > >

    WebMD Medical Reference from Healthwise

    Last Updated: September 11, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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