The ABCDE of Skin Cancer

May 15, 2025

Did you know 1 in 5 Americans will likely get skin cancer? May is National Skin Cancer Awareness Month, and as summer begins, we would like to remind you of the importance of protecting yourself from the sun.

Being Safe in the Sun
The two main risk factors for skin cancer are sun exposure and age. One important way you can protect your skin is by applying sunscreen with an SPF of at least 30. Be sure to apply it 20 minutes before going outside and reapply it every two hours. You can also reduce sun exposure by wearing protective clothing, such as sunglasses, long sleeves, and wide-brimmed hats. While working outside, you should seek out shade whenever possible.

The ABCDE of Skin Cancer
Knowing your skin will help you to notice any changes and new moles or spots that may appear. Use the letters ABCDE to check moles and spots on your skin.

Asymmetry – Spots don’t look the same on all sides.
Border – The borders (outside edges) of the spot are uneven.
Color – The spot is more than one color.
Diameter – The length from one side of the spot to the other is more than 6 mm (the size of a pencil eraser)
Evolution – The spot changes in size, shape, or color.

If you find moles or spots that are changing, bleeding, or itching, make an appointment with a dermatologist (skin doctor).

To learn more about how to prevent skin cancer, view Memorial Sloan Kettering’s (“MSK”) webpage dedicated to skin cancer awareness at www.mskcc.org/direct/nycdcc-welfare-fund/be-sun-smart

MSK Direct
The NYCDCC Welfare Fund has a partnership with MSK Direct to provide our members and your families with the highest-quality cancer programs and services, virtually or in-person, to help navigate your unique journey of screening and prevention, diagnosis, treatment, and life beyond cancer.

If you or a family member are impacted by cancer and would like to discuss treatment options at MSK, call the dedicated MSK Direct phone line for NYCDCC members and dependents at (844) 386-3368 or visit www.mskcc.org/nycdcc