Actinic keratosis is a form of skin cancer that usually resembles warts. These “warts” appear on areas of the skin that are most often exposed to the sun, such as the face, back of hands, and lips. It is considered a form of pre-cancer because it may develop into cancer.
Factors that contribute to obtaining actinic keratosis include over exposure to ultraviolet (UV) rays, X rays, industrial chemicals, and age. Also, the closer you are to the equator, the higher your risk.