Actinic keratoses (AKs) are precancerous skin growths. They are sometimes referred to as solar keratoses because sun (solar) exposure is a major risk factor for developing them. Patients often incorrectly self-diagnose them as dry skin that “comes and goes.” AKs appear as a rough, red, scaly patch, bump, or horn on the skin. AKs are commonly found on body areas that are exposed frequently to sun (face, scalp, ears, nose, neck, arms, back of hands, lower legs). AKs are often felt before they are able to be seen. These spots may not have visible symptoms, but often have a burning, sensitive, or painful sensation when touched. Approximately 10% of AKs develop into squamous cell carcinoma (SCC), the second most common form of skin cancer.