Psoriasis can have large, scaling, slightly elevated lesions. These lesions are usually found near or at the elbow as well as the forearm, knees, legs, scalp, buttocks, and genital areas. Psoriasis may involve large areas of scaling, such as on the neck and scalp. These small bumps and slightly elevated lesions have the typical white scale of psoriasis. This image displays the fine, scaly, slightly elevated lesions in the armpit (axilla) in psoriasis. In psoriasis, this is a typical elevated lesion with white scale on the knee. This image displays dry, scaly areas of the scalp typical of psoriasis. This image displays widespread red, scaling slightly elevated lesions involving buttocks and lower extremities from psoriasis. Psoriasis of the ear typically involves the ear canal and appears as redness with white scale. This image displays psoriasis, which can develop a thick, white scale. Psoriasis often has white, thick scale that comes off in "plates" when picked, causing bleeding. Psoriasis can be slightly scaly with bright red, well-demarcated areas. This image displays scaly, slightly elevated lesions on the lower back and buttocks, typical locations for psoriasis. Pinkness and scaly skin can cover the soles when psoriasis is on the feet. This image displays thick, white, scaly skin with redness underneath, typical of psoriasis. Psoriasis involving the fingernails may cause an irregular nail plate as well as separation of the nail from the nail bed (onycholysis). This individual also has psoriasis of the skin around the nail. Psoriasis typically has bright red or pink circular, scaling patches, which may be seen anywhere on the body. This image displays pits, roughness, and lifting of the tip of the nail tip typical of psoriasis of the nail. Psoriasis typically has multiple areas of skin involvement with lesions clustered on or near the knees. This image displays yellow, lifted nails from onycholysis, which is frequent in psoriasis. Numerous tiny nail pits are common in people with psoriasis. This image displays minimal scale with subtle redness due to psoriasis.
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Psoriasis  Information for adults

Picture of Psoriasis: Psoriasis can have large, scaling, slightly elevated lesions. These lesions are usually found near or at the elbow as well as the forearm, knees, legs, scalp, buttocks, and genital areas. Divider line
Psoriasis can have large, scaling, slightly elevated lesions. These lesions are usually found near or at the elbow as well as the forearm, knees, legs, scalp, buttocks, and genital areas.
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Overview
Psoriasis is a noncontagious, lifelong skin condition that affects about 2–3% of the population of the United States. People with psoriasis have thickened, red, and often scaly patches on their skin. Psoriasis is very likely to run in families, but it can also be triggered by certain situations, such as emotional stress, injury to the skin, infection, as well as taking certain medications. The exact cause of psoriasis is unknown, but it seems to be caused by errors in how the immune system functions.
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Last Modified: 20 Feb 2009
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