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Most moles are harmless—but not all. Some moles can be early indicators of melanoma, a serious and potentially life-threatening form of skin cancer. That’s why regular skin checks and knowing what to watch for are critical to early detection.
At BASS Medical Group, our primary care providers (PCPs) can evaluate skin concerns, determine if further testing is needed, and refer you to a cancer specialist at our BASS Cancer Center if necessary.
What to Watch For: The ABCDEs of Melanoma
Here are five important signs that it’s time to get a mole checked by a doctor:
1. Asymmetry
Healthy moles are typically symmetrical. If one half of the mole doesn't match the other, it could be a warning sign.
2. Border Irregularity
Are the edges of the mole ragged, blurred, or uneven? Jagged borders could signal abnormal cell growth.
3. Color Changes
A mole with multiple colors—or one that changes color—should be evaluated. Watch for shades of tan, black, brown, blue, red, or white.
4. Diameter Larger Than a Pencil Eraser
Moles larger than 6mm (about the size of a pencil eraser) are more likely to be atypical, especially if growing.
5. Evolving Appearance
Any change in size, shape, color, elevation, or sensation (like itching or bleeding) is a red flag. New moles in adulthood also warrant medical evaluation.
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What About Red Moles or New Growths?
Red moles (also called cherry angiomas) are typically benign, but if you notice new growths, bleeding, or changes in appearance, play it safe and get them checked.
Frequent self-checks—especially if you’re at higher risk or have a family history of skin cancer—can be lifesaving. Look closely at areas often exposed to sunlight like the face, neck, chest, arms, and hands.
When to See a Doctor
Make an appointment with a BASS Medical Group primary care provider if:
- A mole has changed recently in color, size, or shape
- You develop new moles in adulthood
- The mole bleeds, itches, or becomes painful
- You have a family history of skin cancer
Our providers can examine your skin, assess the concern, and refer you to the BASS Cancer Center for additional testing or biopsy if needed.
Protect Your Skin, Protect Your Health
Sun exposure is a major risk factor for skin changes. Wear sunscreen, avoid peak UV hours, and monitor any changes in your skin regularly. Early detection saves lives.
☀️ Concerned About a Mole?
Schedule an exam with a BASS primary care provider today. We serve Walnut Creek, Oakland, San Francisco, and the greater Bay Area.
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