Actinic keratosis, also known as solar keratosis or pre-cancers, usually present as a rough or red scaly bump or area on the skin. Actinic keratosis are more likely to occur in chronically sun exposed areas like the face and hands. Actinic keratosis can be the first step in the development of skin cancer and most commonly occurs in adults around age 50. It is estimated 10-25 percent of active lesions may progress to Squamous Cell Carcinoma. Common treatments include cryotherapy (freezing), topical chemotherapy creams, or photodynamic therapy (PDT). Once treated, even with avoidance of the sun, most people will develop new lesions and require regular dermatology exams.