Chronic erythematous, scaly macule or papule, single or multiple. Most commonly located on areas of skin with prolonged sun exposure (e.g., face, lower lip, dorsum of the hands, forearms, bald areas of the scalp, and ears) of middle-aged or older men with light-colored skin.
Has the potential to progress into an invasive squamous cell carcinoma (SCC).
Although diagnosed clinically, a biopsy may help rule out SCC.
Treatment consists of destructive methods (e.g., cryotherapy with liquid nitrogen, curettage with or without electrodesiccation, chemical peels, and photodynamic therapy) or topical medication (e.g., topical fluorouracil, imiquimod, diclofenac, or ingenol mebutate).
Actinic keratosis (AK) lesions are skin-colored, yellowish, or erythematous, ill-defined, irregularly shaped, small, scaly macules or plaques localized in sun-exposed areas of the body. Typically, they occur in middle-aged or older men with light-colored skin and a history of chronic sun exposure. They have the potential to progress into squamous cell carcinoma (SCC).
Professor Emeritus of Dermatology and Cutaneous Surgery
University of Miami Miller School of Medicine
Skin & Cancer Associates, LLP
Center for Clinical and Cosmetic Research
BB has acted as an investigator for and received research support from Medicis, LEO Pharma, DUSA, and Ferndale. He has also been a consultant and on the speakers' bureau of Medicis, LEO Pharma, DUSA, Dermira, Novartis, Galderma, Ferndale, Berg, Pharmaderm, Valeant, Pfizer, and Biofrontera.
Hollywood Dermatology and Cosmetic Specialists
Voluntary Assistant Professor
Department of Dermatology and Cutaneous Surgery
University of Miami
Miller School of Medicine
Department of Dermatology
Jackson Memorial Hospital
SA declares that he has no competing interests.
Departments of Pathology and Dermatology
DSC declares that he has no competing interests.
Dermatopathology Fellowship Director
University of Chicago
Section of Dermatology
CS declares that he has no competing interests.
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