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Genetic and Rare Diseases Information Center (GARD)

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Multiple sclerosis


* Not a rare disease
Other Names for this Disease
  • MS
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What causes multiple sclerosis?

Although the exact cause of MS is unknown, it is believed to be an autoimmune disorder, where the body’s immune system attacks the myelin.It is unclear what triggers the autoimmune response resulting in MS. However, the most frequent theories about the cause of MS include a virus-type organism, an abnormality of the genes responsible for control of the immune system, or a combination of both factors. [1]
Last updated: 6/24/2013

  1. Multiple Sclerosis. . MedlinePlus Medical Encyclopedia Web site. : Accessed 1/7/2008.