What is Actinic Keratosis?
An actinic keratosis (plural, keratoses) is a small, crusty patch that forms on sun-damaged skin. It may be white and wart like in appearance but may also be pink, red, or brown. Actinic keratoses usually appear on adults older than 40 who have had sustained exposure to the sun without proper sun protection. They are most common on the face, forehead, lips, ears, scalp, neck, forearms, and back of the hands. Although only about 1% of actinic keratoses become skin cancer, having them raises your risk. If you have one actinic keratosis, you are likely to develop more.