Not only is basal cell carcinoma the most common form of skin cancer, but it's also the most frequently occurring form of all cancers. Basal cell carcinoma originates in the basal cells, a type of cell within the skin that produces new skin cells as the older cells expire. It often appears as a skin-colored, brown, black or blue bump on the skin's surface. All skin tones can develop basal cell carcinoma; however, those with fairer skin, those who seldom protect their skin from the sun, and/or those who frequently use tanning beds are at a greater risk. Basal cell carcinoma occurs mainly on areas of skin that are primarily exposed to sunlight, such as the head and neck.

Most basal cell carcinomas grow slowly and don't often spread to other parts of the body. They are also curable and cause minimal scarring when treated.