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Seborrheic keratosis

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Illustrations

Irritated Seborrheic Kerotosis - neck
Irritated Seborrheic Kerotosis - neck

Alternative Names    Return to top

Benign skin tumors - keratosis; Keratosis - seborrheic; Senile keratosis

Definition    Return to top

Seborrheic keratosis is the presence of benign wart-like growths on the surface of the skin.

Causes    Return to top

Seborrheic keratosis is a benign form of skin tumor. The origin is unknown. It commonly appears after age 40.

The tumors appear as wart-like growths in a variety of colors. They may appear in large numbers on the surface of the body. They are usually painless and benign, but may become irritated and itch. They may be cosmetically disfiguring and psychologically distressing as a result.

Symptoms    Return to top

Symptoms are skin growths that:

Exams and Tests    Return to top

Diagnosis is based primarily on the appearance of the growths. A skin lesion biopsy may be used to confirm the diagnosis.

Treatment    Return to top

Treatment is usually not required unless the growths become irritated or are cosmetically displeasing.

If treatment is needed, growths may be surgically removed or removed by cryotherapy (freezing).

Outlook (Prognosis)    Return to top

Seborrheic keratosis is a benign and usually painless condition. Removal of the growths is simple and usually does not result in scars. However, growths on the trunk often leave lighter-colored skin. Particular growths usually do not recur after removal, but people who are prone to this condition may develop more in the future.

Possible Complications    Return to top

When to Contact a Medical Professional    Return to top

Call for an appointment with your health care provider if you have symptoms suggestive of seborrheic keratosis.

Also call if new symptoms develop, including change in the appearance of the skin growth or development of other lesions.

Update Date: 10/26/2006

Updated by: Michael S. Lehrer, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.

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