OverviewActinic keratosis is associated with cumulative skin damage, caused by repeated exposure to the ultraviolet light found in sunshine. Over the years, the genetic material of cells becomes irreparably damaged and produces lesions similar to the ones in this photograph. The lesions may later become cancerous (pre-cancerous).
Update Date 11/20/2012
Updated by: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.