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What Are Autoimmune Disorders?

Immune system disorders cause abnormally low activity or over activity of the immune system. In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections.

In response to an unknown trigger, the immune system may begin producing antibodies that instead of fighting infections, attack the body's own tissues. Treatment for autoimmune diseases generally focuses on reducing immune system activity. Examples of autoimmune diseases include:

WebMD Medical Reference Reviewed by Jennifer Robinson, MD on June 22, 2020

Sources

SOURCES:
Goldman, L. Cecil Medicine, Saunders, 2007.
Firestein, G. Kelley's Textbook of Rheumatology, W.B. Saunders Company, 2008.

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