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The ABCD's of Moles & Melanomas

  • Asymmetry: Most moles are symmetrical and round. Be on the lookout for those that change shape and become asymmetrical.
  • Border: Most moles have even borders. Watch for moles that are uneven and irregular around the edges.
  • Color: It is normal for moles to be a uniform brown color. Moles that are different shades of brown or black may be a skin cancer and should be evaluated.
  • Diameter: Most moles are small -- about 6 mm or smaller in diameter. If a mole becomes larger than the tip of a pencil eraser, you should check with your dermatologist.