Regularly checking your moles is one of the simplest and most effective ways to prevent skin cancer. The ABCDE rule helps identify suspicious changes that may require a dermatological visit. While most moles are benign, early recognition of melanoma significantly increases the chances of early diagnosis and effective treatment.
Specialists advise checking your skin at least once a month in a well-lit environment, using a full-length mirror and a hand-held mirror to also check less visible areas. If you have many moles, a history of intense sun exposure, or numerous spots and sun-damaged areas, it is helpful to combine self-examination with periodic mole mapping by a dermatologist.
The ABCDE rule for moles
The ABCDE rule is a simple method for evaluating the appearance of moles and recognizing possible warning signs.
A - Asymmetry
A benign mole tends to have a regular and symmetrical shape. If, when ideally dividing the mole into two halves, they appear very different from each other, it is advisable to have it evaluated by a specialist.
B - Borders
The borders of a normal mole are generally regular and well-defined. Irregular, jagged, or poorly defined borders may indicate a need for further investigation.
C - Color
A benign mole normally has a uniform color. The presence of multiple shades of brown, black, red, blue, or white within the same lesion warrants attention.
D - Diameter
Although some melanomas can be very small, a diameter greater than approximately 6 mm is a criterion that requires dermatological evaluation, especially if associated with other changes.
E - Evolution
Evolution is one of the most important indicators. A mole that changes in size, shape, color, or thickness over time, or that begins to bleed, itch, or form scabs, should be checked as soon as possible.
When to see a dermatologist
Self-examination does not replace a specialist visit. Book an appointment if you notice:
- the appearance of a new mole in adulthood;
- evident changes in an existing mole;
- bleeding, itching, or scabbing;
- marked differences compared to other moles on the skin.
Those with numerous moles, a family history of melanoma, or a long history of exposure to UV rays should undergo periodic mole mapping.
Prevention is still the best strategy
In addition to regular check-ups, skin protection is the most effective way to reduce the risk of sun damage.
For proper photoprotection, it is advisable to:
- apply SPF 50 sunscreen to exposed areas;
- reapply it every 2 hours throughout the day;
- avoid exposure during the most intense hours of UVA and UVB rays;
- wearing hats, sunglasses and protective clothing from UV rays.
It is important to know that not all fabrics offer the same protection. Common summer clothing can let a significant portion of ultraviolet radiation pass through. UPF clothing, on the other hand, is designed and tested to screen out UV rays, offering an additional barrier compared to simple traditional clothing.
Protecting your skin today means taking care of it over time
The ABCDE rule is a valuable tool for monitoring moles and recognizing any suspicious changes, but it must always be accompanied by regular dermatological check-ups and proper sun damage prevention. Combining the use of sunscreen, proper sun protection, and the use of UPF clothing helps reduce exposure to UV rays and contributes to long-term skin health.
