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    Autoimmune Diseases Directory

    Autoimmune disorders occur when the body's immune system reacts improperly, attacking and damaging the body itself. Follow the links below to find WebMD's comprehensive coverage about causes of autoimmune diseases, different types of autoimmune diseases, how to treat them, and much more.

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    Thumbnail: Rheumatoid Arthritis (RA) and Autoimmune Diseases

    Learn what makes RA an autoimmune disease. Get the facts as to what autoimmune diseases are and how changes involving your immune system lead to RA.

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