Melanoma is usually visible as a single dark skin spot. It may appear anywhere on the body, but it most commonly develops on the back, chest, and legs. Most of the time, melanoma develops on normal-looking skin, but it can grow out of an existing mole.
Watch a mole for the A, B, C, D and Es of melanoma:
A mole that bleeds, feels numb, or has a crusty surface may also hint at melanoma.
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