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Psoriasis - Cause

The exact cause of psoriasis isn't known.

Doctors believe that the immune system overreacts, causing inflammation and flaking of skin.

Recommended Related to Psoriasis

The Signs and Symptoms of Psoriasis

The signs and symptoms of psoriasis vary depending on the type you have. Some common signs for plaque psoriasis -- the most common type of psoriasis -- include: Plaques of red, inflamed skin, often covered with loose, silver-colored scales. These plaques may be itchy and painful and sometimes crack and bleed. In severe cases, the plaques will grow and merge into one another, covering large areas. Disorders of the fingernails and toenails, including discoloration and pitting of the nails....

Read the The Signs and Symptoms of Psoriasis article > >

Many scientists believe that psoriasis can be inherited. About one-third of people who have psoriasis have one or more family members with the condition.1 But it isn't clear that genetic factors alone determine whether you get psoriasis.

Psoriasis isn't contagious—it can't be spread by touch from person to person.

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WebMD Medical Reference from Healthwise

Last Updated: January 09, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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