Skin cancer is usually noticed when a mole changes size, color, shape, or texture, or when a skin wound does not heal. Skin cancer may appear as a dark, multi-colored spot, a spot with irregular borders, shiny bumps, or a large mole. Some carcinomas may appear smooth, shiny, and could be pearly, red, purple, blue, or brown. If you have any of these symptoms, see your doctor right away to have the skin spot examined. Follow the links below to find WebMD's comprehensive coverage about symptoms of skin cancer, the ABCDEs of melanoma, and much more.