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    Juvenile Idiopathic Arthritis - Cause

    The cause of juvenile idiopathic arthritis (JIA) isn't well understood. Most experts believe it is caused by a combination of things, including:

    • An immune system that is too active and attacks joint tissues.
    • Viruses or other infections that cause the immune system to attack joint tissues.
    • Having certain genes that make the immune system more likely to attack joint tissues.

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 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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