ShopThe ABCDEs of Melanoma: How to Check Your Own Skin
Self-exams are one of the simplest things you can do between dermatology visits. Learning how to check for skin cancer at home and recognizing early melanoma warning signs can help detect skin cancer before it becomes more advanced.
Dermatologists use the ABCDE rule for melanoma as a simple, memorable guide to evaluating moles and spots. Here’s what each letter means:
A: Asymmetry
Normal moles are typically round and symmetrical. If you were to draw a line down the middle of the spot and the two halves don’t match, that asymmetry is worth noting.
Asymmetry is one of the earliest melanoma symptoms patients may notice during a skin cancer self-exam.
B: Border
Benign moles usually have smooth, even borders. Melanomas often have irregular, ragged, or blurred edges. If a spot looks like it has a “fuzzy” or undefined outline, flag it for your dermatologist.
C: Color
A uniform shade of brown or tan is typical for a normal mole. Spots with multiple colors, including shades of black, brown, red, white, or blue within the same lesion, can be a warning sign.
Changes in color are among the most recognizable signs of melanoma and should always be evaluated by a dermatologist.
D: Diameter
Melanomas are often larger than 6mm in diameter (roughly the size of a pencil eraser) when diagnosed, though they can be smaller. Any mole that is growing in size should be evaluated.
E: Evolving
This is perhaps the most important letter. Any mole or lesion that is changing in size, shape, color, or symptoms (such as itching, bleeding, or crusting) should be seen by a dermatologist promptly.
“In my experience, E evolving catches the most cancers. Patients will usually recognize something is growing or changing. During skin checks, we discuss all of them and really emphasize to come in sooner if they notice any lesion is evolving.”
How to Do a Monthly Self-Exam
Set a recurring reminder to check your skin once a month. Use a full-length mirror, a hand mirror for hard-to-see areas, and good lighting. Check from head to toe, including your scalp, between your toes, your nails, and your back. Ask a partner to check your back and scalp if needed.
Doing a monthly skin cancer self-exam can help patients identify suspicious moles, non-healing spots, or changing lesions between professional dermatology visits.
“I recommend patients do their self-exam after a shower in a well-lit room while moisturizing, on the same day each month. It builds good self-care habits to moisturize and do self-exams at the same time.”
What Are Patients Most Likely to Miss?
Even motivated patients have blind spots, literally. According to Dr. Benjamin Witkoff, Mohs surgeon at Schweiger Dermatology, the back is one of the most commonly overlooked areas during self-exams:
“Patients often miss their back as it can be difficult to see themselves. We recommend having family help check patients’ backs for this reason. Also, patients think they only have to check for brown spots, which can lead to missing basal cell carcinomas and squamous cell carcinomas that don’t look like a typical mole.”
This is an important reminder: skin cancer doesn’t always look like a mole. A pearly bump, a rough scaly patch, or a sore that won’t fully heal can all be signs of something worth evaluating.
Many patients searching for what melanoma looks like are surprised to learn that skin cancer can also appear as persistent sores, rough patches, or bumps that do not heal normally.
Don’t Dismiss the “Pimple That Won’t Go Away”
One of the most common scenarios Dr. Witkoff sees in his exam room? Patients who waited months before coming in because the spot “didn’t look like cancer.”
“The most common thing that gets dismissed is the ‘pimple that won’t go away.’ Patients will go a few months before dismissing it, when a standard pimple should resolve after a few days.”
If something has persisted for more than a few weeks, even if it looks minor, it’s worth getting it checked.
Persistent lesions, spots that bleed, or bumps that continue growing may be early skin cancer symptoms and should be evaluated promptly.
Real Patients, Real Outcomes
Self-exams have directly led to early, life-changing diagnoses for Dr. Witkoff’s patients. The difference between early and late detection isn’t just medical, it’s practical.
“Skin cancers, even melanomas, that are caught early allow for less aggressive and less invasive treatment. Early detected cancers don’t have time to grow and spread. It can open the option for nonsurgical treatment modalities, and if surgery is required, the scarring is always less.”
Self-exams are not a substitute for professional skin checks, they are a powerful complement, helping you notice changes between appointments and giving you more to discuss with your provider.
Professional skin cancer evaluations remain one of the most effective ways to detect melanoma and other skin cancers early.
BOOK YOUR SKIN EXAM TODAY
Notice something that concerns you? Trust your instincts. Book an appointment with a Schweiger Dermatology provider for a professional evaluation. Early detection is always worth the visit.
Scheduling a professional skin cancer screening can help identify suspicious lesions before they become more difficult to treat.
