Auto immunity is an overactive immune response of the body against substances and tissues normally present in the body. In other words, the body attacks its own cells. It is caused by a reaction similar to allergy where the immune system reacts to a normally harmless thing. In autoimmuny, the immune system reacts to normal "self" body tissues. There are more than 40 human diseases classified as autoimmune diseases. Sjogren's syndrome can develop at any age but most people are older than 40 at diagnosis and unfortunately have had symptoms for a long time. The condition is more likely to occur in women than in men and can even affect children. There is no cure for Sjogren's syndrome, but many of the symptoms can be treated.
From Auto immune Disorders
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