How can I recognize melanoma?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)

Know how to recognize the ABCDE's of melanoma, the deadliest skin cancer:

  • asymmetry - one half is different than the other
  • border - edges are irregular, ragged, notched or blurred
  • color - uneven and may include different shades
  • diameter - spot is greater than 6 millimeters across
  • evolution - if a spot changes any of the above over time


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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.