One severe sunburn in the first 18-20 years of life probably doubles the risk of malignant melanoma. The most common warning sign of skin cancer is a change on the skin, especially a new growth or a mole that does not heal. Melanoma, the most serious cancer of the skin Melanoma is the most serious cancer of the skin. It can occur on any skin surface. Often, the first sign of melanoma is a change in the size, shape, color, or feel of an existing mole.
Most melanomas have a black or blue-black area.
A symmetry - The shape of one half does not match the other. C olor - The color is uneven. Shades of black, brown and tan may be present. Areas of white, gray, red, pink, or blue also may be seen. There is a change in size, usually an increase.