http://www.niams.nih.gov/Health_Info/Sjogrens_Syndrome/default.asp
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National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health
Sjögren's (SHOW-grins) syndrome is an autoimmune disease--that is, a disease in which the immune system turns against the body's own cells. In Sjögren's syndrome, the immune system targets moisture-producing glands and causes dryness in the mouth and eyes. Other parts of the body can be affected as well, resulting in a wide range of possible symptoms.