Psoriasis is a chronic skin disorder that can affect any part of the body. It is a non-contagious disease which occurs most often occurs on scalp, elbows, knees, hands, feet and genitals. The characteristic features of the psoriasis are raised and thickened red patches covered with silvery scales and well-defined borders. The lesions can have severe itching and physical discomfort. Besides the skin and scalp psoriasis can affect the joints and nails.
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