Stephen J. Schueler, M.D.

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New Mole Prevention

Prevention of skin moles includes:

  • Wear clothing that blocks the sun's rays.
  • Use sunscreen if you are out in the sun for more than 30 minutes.
  • Use a sunscreen that protects against UVA.
  • Stay out of the sun between 10 AM and 4 PM, when the sun's rays are strongest.
  • Perform regular skin self-examinations:
    • Skin areas that are often exposed to the sun are at highest risk for skin cancer.
    • See your doctor for changes in color, size, or overall appearance of skin moles.
    • See your doctor for new or unusual skin moles.
  • Learn the American Cancer Society's ABCD rules for skin lesions:
    • A: asymmetry: one-half of the mole does not match the other half.
    • B: border irregularity: the edges of the mole are ragged or notched.
    • C: color: the color of the mole is not the same all over. There may be shades of tan, brown, or black, and sometimes patches of red, blue, or white.
    • D: diameter: the mole is wider than about 1/4 inch

Continue to New Mole Outlook

Last Updated: Jan 4, 2011 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed New Mole References
  1. Muhn CY, From L, Glied M. Detection of artificial changes in mole size by skin self-examination. J Am Acad Dermatol. 2000 May;42(5 Pt 1):754-9. [10775850]
  2. Seidenari S, Pellacani G, Grana C. Colors in atypical nevi: a computer description reproducing clinical assessment. Skin Res Technol. 2005 Feb;11(1):36-41. [15691257]
  3. Tilliss TS. Examination of skin moles. Am J Dent. 1997 Aug;10(4):164-5. [9590901]
  4. Weinstock MA, Nguyen FQ, Martin RA. Enhancing skin self-examination with imaging: evaluation of a mole-mapping program. J Cutan Med Surg. 2004 Jan-Feb;8(1):1-5. [15688095]
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