The ABCDEs of Melanoma: How to Spot a Dangerous Mole

Living in Bend, Oregon, means enjoying an active, outdoor lifestyle. However, our high elevation and abundant sunshine increase our exposure to ultraviolet (UV) radiation, making regular skin checks a necessity. Melanoma is the most dangerous form of skin cancer, but when detected early, it is highly treatable. At Peters Dermatology Center, Dr. Gerald Eugene Peters Jr., MD, emphasizes the importance of the ABCDE method, a simple yet life-saving guide to help you monitor your skin between professional exams.

A is for Asymmetry

A healthy mole is typically symmetrical. If you were to draw an imaginary line through the center, both halves would match. In contrast, melanomas are often asymmetrical. If one half of a mole looks significantly different from the other in shape or structure, it is a warning sign that requires a professional evaluation.

B is for Border

The borders of a benign mole are usually smooth and clearly defined. Melanomas often have irregular, ragged, or notched edges. The pigment may appear to smudge or bleed into the surrounding skin, making the perimeter look blurry. If the edge of a mole looks like a map of a rugged coastline rather than a smooth circle, it is time to schedule a visit.

C is for Color

Common moles are generally a single shade of brown. Having a variety of colors within one lesion is a classic red flag for melanoma. Look for shades of tan, brown, and black, or even splashes of red, white, and blue. A mole that is significantly darker than others, often called the ugly duckling, should always be examined.

D is for Diameter

While melanomas can be small, they are often larger than the size of a pencil eraser (about 6 millimeters). However, do not wait for a spot to reach this size if it meets other criteria. Modern dermatology tools allow us to catch skin cancers when they are much smaller, which is why any new or growing spot deserves attention.

E is for Evolving

Evolution is perhaps the most important factor in identifying skin cancer. A healthy mole generally stays the same over time. If you notice a mole changing in size, shape, color, or elevation, or if it begins to itch, bleed, or crust, these are significant indicators of change. At Peters Dermatology Center, we recommend performing a self-exam monthly to stay familiar with your skin's patterns.

Expert Care in Bend, OR

Your skin is your body's largest organ and its first line of defense. While the ABCDEs are an excellent starting point, they do not replace a comprehensive skin cancer screening by a board-certified dermatologist. Dr. Peters and our team utilize advanced diagnostic techniques to ensure that any suspicious lesions are addressed with precision and care. If you have a mole you’re not sure about, schedule an appointment with us in Bend, OR, by calling 541-323-7546.