actinic keratosis

Definition / meaning of actinic keratosis

A thick, scaly patch of skin that may become cancer. It usually forms on areas exposed to the sun, such as the face, scalp, back of the hands, or chest. It is most common in people with fair skin. Also called senile keratosis and solar keratosis.

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Find More About 'actinic keratosis'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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