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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

Psoriasis: Test Your Knowledge

Psoriasis affects up to 7.5 million Americans, according to the National Institutes of Health. Psoriasis is more common in adults than children and affects males and females equally. Psoriasis affects: 2% to 3% of people throughout the world About 2.2% of people in the United States Some cultures more than others. Worldwide, psoriasis is most common in Scandinavia and other parts of northern Europe. It appears to be far less common among Asians and is rare in Native Americans,...

Read the Psoriasis: Test Your Knowledge 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.

WebMD Medical Reference from Healthwise

Last Updated: July 17, 2014
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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