Melanoma cells usually continue to produce melanin. This is why such cancers can appear in mixed shades of tan, brown and black. It has a tendency to spread quickly. Melanomas may turn red, blue or white and they also might crust and bleed. In women, melanomas commonly occur on the arms and legs, while in men they may develop on the back.
Most melanomas start on a pigmented patch such as a mole or a freckle.
Watch out for itchiness or change in the size, height, shape, colour, texture, or sensation of a mole. You are encouraged to distribute and use this information without alteration.