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Sjogren's syndrome

Sjögren's syndrome features abnormal dryness of the eyes, mouth and vagina. The condition is associated with diseases that arise from an immune system that is not working well. The basic cause is unknown.

The dryness results from the reduced secretion of various kinds of glands, following invasion and damage by white cells (lymphocytes) that are part of the immune system.

The peak incidence is between the ages of 40 and 60. About 2% of the population is affected, but the condition is often left undiagnosed.