Moles stem from skin cells called melanocytes, which determine skin coloration. When these melanocytes cluster together, they form a mole.
Abnormal moles typically are large, usually over 6 millimeters in diameter; irregularly shaped, usually with ragged borders; and asymmetrical, usually not uniform in shape.
In addition, you need to watch out for moles that are itching, burning, or painful; bleeding or oozing; or recurring after being previously removed.
Perform regular self-checks for any moles exhibiting these signs. Pay particular attention to any mole that has changed in size, color, height, or shape.
Visit your dermatologist regularly, particularly if you face elevated skin cancer risk. Higher-risk individuals include those who burn easily, have fair skin with light hair and eyes, or possess a family history of skin cancer.
Your dermatologist may biopsy suspicious moles by shaving small moles without sutures, removing larger moles with sutures, or performing Mohs micrographic surgery to examine tissue layer-by-layer under a microscope.
Protect yourself with sunscreen rated SPF 15 minimum, SPF 30 for extended sun exposure, and SPF 50+ if you face elevated skin cancer risk.