Multimedia ImagesActinic keratosisRequest an Appointment at Mayo Clinic Diagnosis & treatment March 07, 2018 References Goldsmith LA, et al., eds. Epithelial precancerous lesions. In: Fitzpatrick's Dermatology in General Medicine. 8th ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://accessmedicine.com. Accessed Aug. 5, 2016. Padilla RS. Epidemiology, natural history and diagnosis of actinic keratosis. http://www.uptodate.com/home. Accessed Aug. 5, 2016. Wolff K, et al. Photosensitivity, photo-induced disorders and disorders by ionizing radiation. In: Fitzpatrick's Color Atlas and Synopsis of Clinical Dermatology. 7th ed. New York, N.Y.: The McGraw-Hill Companies; 2013. http://www.accessmedicine.com. Accessed June 19, 2015. Actinic keratosis. American Academy of Dermatology. http://www.aad.org/dermatology-a-to-z/diseases-and-treatments/a---d/actinic-keratosis. Accessed Aug. 5, 2016. Gibson LE (expert opinion). Mayo Clinic, Rochester, Minn. Oct. 21, 2016. Jorizzo J. Treatment of actinic keratosis. http://www.uptodate.com/home. Accessed Aug. 5, 2016. FDA sheds light on sunscreens. Food and Drug Administration. http://www.fda.gov/forconsumers/consumerupdates/ucm258416.htm. Accessed Aug. 5, 2016. AskMayoExpert. Actinic keratosis. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016. Habif TP. Light-related diseases and disorders of pigmentation. In: Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 6th ed. Maryland Heights, Mo.: Elsevier; 2016. http://www.clinicalkey.com. Accessed June 19, 2015. Sunscreen FAQs. American Academy of Dermatology. https://www.aad.org/media/stats/prevention-and-care/sunscreen-faqs. Accessed Sept. 26, 2016. Lebwohl M. Actinic keratosis. JAMA. 2016;315:1394. Actinic keratosisSymptoms & causesDiagnosis & treatment Advertisement Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. Advertising & Sponsorship Policy Opportunities Ad Choices Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic. FREE TRIAL – Mayo Clinic Health LetterImprove Your Hearing and BalanceStop Osteoporosis in Its TracksReduce Your Risk of Heart DiseaseThe Mayo Clinic Diet Combo CON-20212588 Patient Care & Health Information Diseases & Conditions Actinic keratosis