What causes multiple sclerosis (MS)?

Updated: Oct 08, 2019
  • Author: Christopher Luzzio, MD; Chief Editor: Jasvinder Chawla, MD, MBA  more...
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Answer

The cause of MS is unknown, but it is likely that multiple factors act in concert to trigger or perpetuate the disease. It has been hypothesized that MS results when an environmental agent or event (eg, viral or bacterial infection, exposure to chemicals, lack of sun exposure) acts in concert with a genetic predisposition to immune dysfunction.


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