Health encyclopaedia - Alphabetical Topic List
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Complications of Psoriasis
Between 10% and 20% of people with psoriasis develop psoriatic arthritis, which causes tenderness, pain and swelling in the joints and connective tissue with associated stiffness. It commonly affects the ends of the fingers and toes. In some people it affects the lower back, neck and knees. About 80% of those affected develop psoriatic arthritis after the onset of psoriasis, but in about 20% the arthritis occurs before the onset of psoriasis.