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Psoriasis.(Causes and Treatment)(Disease/Disorder overview)
- Article from:
- Clinical Reference Systems
- Article date:
- January 1, 2006
CopyrightCOPYRIGHT 2006 McKesson Health Solutions LLC. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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What is psoriasis?
Psoriasis is a common skin problem. It causes a thick, rough, dry buildup of the outer layer of skin. The thick areas of skin are called plaques. They usually occur on the scalp, elbows, knees, and buttocks, but they can develop anywhere on the skin.
People of all ages can have psoriasis. It is not contagious.
How does it occur?
When you have psoriasis, your outer layer of skin makes new cells more rapidly than normal. The extra cells become thick plaques. No one knows exactly what causes psoriasis, but most researchers believe it is an immune system disorder.
You are more likely to have psoriasis if members ...