Melanoma is the most serious form of skin cancer. Even so, if diagnosed and removed while it is still thin and limited to the outermost skin layer, it is almost 100% curable. Once the cancer advances and spreads to other parts of the body, it is hard to treat and can be deadly.

Warning signs of melanoma include: changes in the surface of a mole, scaliness, oozing, bleeding, the appearance of a new bump on the skin, spread of pigment from the border of a mole into surrounding skin, change in sensation including itchiness, tenderness, or pain.