Posted in Web Actinic keratosis: Pictures, causes, and prevention January 5, 2021 Actinic keratosis is a rough and often bumpy patch or lesion that forms on the skin. Typically, actinic keratosis is found on the scalp, back of the hands, the face, ears, back of the forearms, the… https://www.medicalnewstoday.com/articles/318466