Skin cancer is an abnormal growth of skin cells. It most often develops on areas of the skin exposed to the sun’s rays. Skin cancer affects people of all colors and races, although those with light skin who sunburn easily have a higher risk.
There are three types of skin cancer that account for nearly 100% of all diagnosed cases: basal cell carcinoma (BCC), squamous cell carcinoma (SCC) and melanoma. Learn more about these forms of skin cancer, including what they look like, signs and symptoms, and diagnosis and treatment through the Academy’s Dermatology A-Z section.