A skin disorder recognized by its dry, silver, scaly patches, psoriasis involves the rapidly accelerated growth of new skin layers at a rate too fast for old skin to be shed. The scalp, hands, armpits, elbows, knees, lower back, buttocks, and other areas may be affected.
The genetic tendency may exist for psoriasis, which often appears initially in early adulthood and tends to recur.
In general, it produces little physical discomfort besides itching. The most serious complications are secondary bacterial infections and the development of a form of arthritis.
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