Melanoma is the most serious type of skin cancer. The most important warning sign of melanoma is a change in a mole or other skin growth, such as a birthmark.

• Evolution is another word for "change." Call your doctor if you notice any changes such as:
  • A change in the size, shape, or color of a mole.
  • A change in symptoms, such as a mole that becomes itchy or tender or that bleeds.