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Alternative Names Return to topBenign skin tumors - keratosis; Keratosis - seborrheic; Senile keratosis
Definition Return to top
Seborrheic keratosis is noncancerous (benign) wart-like growths on the surface of the skin.
Causes Return to top
Seborrheic keratosis is a benign form of skin tumor. The cause is unknown. The condition commonly appears after age 40.
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 unsightly.
If treatment is needed, growths may be removed with surgery or freezing (cryotherapy).
Outlook (Prognosis) Return to top
Removing the growths is simple and usually does not result in scars. However, growths on the trunk often leave the skin lighter colored.
In rare cases, a person who gets many growths very quickly may have gastric cancer.
Growths usually do not return after they are removed, but people who are prone to this condition may develop more growths 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 of seborrheic keratosis.
Also call if you develop new symptoms, including: