OverviewThese pre-malignant lesions (brown) are actinic keratoses. They are scaly and rough, and there is evidence of bleeding. They are shown here on a typical, sun-exposed area of skin.
Review Date 8/20/2016
Updated by: David L. Swanson, MD, Vice Chair of Medical Dermatology, Associate Professor of Dermatology, Mayo Medical School, Scottsdale, AZ. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.