Skin tags and moles are among the most common growths dermatologists evaluate, and while the overwhelming majority are completely benign, knowing when a growth needs a closer look — rather than just cosmetic removal — is important. Between the two, it's easy to feel unsure about what you're looking at, which is part of why professional evaluation matters even for growths that turn out to be entirely harmless.
Skin Tags vs. Moles
Skin tags (acrochordons) are small, soft, flesh-colored growths that typically form where skin rubs against itself or clothing — the neck, underarms, eyelids, and groin are common spots. They're made of loose collagen fibers and blood vessels surrounded by skin, and tend to become more common with age, during pregnancy, and in people who are overweight or have insulin resistance.
Moles (nevi) are collections of pigment-producing cells (melanocytes) and can be flat or raised, tan to dark brown, and range from a few millimeters to over a centimeter. Per the American Academy of Dermatology, most adults have 10–40 moles, and the vast majority never become a problem. Some moles are present from birth, while others develop over time, particularly with sun exposure.
When to Have a Mole Checked
The AAD recommends the 'ABCDE' rule to flag moles that need evaluation: Asymmetry (one half doesn't match the other), irregular Border (ragged or blurred edges), multiple Colors, Diameter larger than a pencil eraser (about 6mm), and Evolution (any change in size, shape, or color). Any new or changing growth, or one that bleeds, itches, or won't heal, should be evaluated promptly rather than monitored at home.
Even moles that don't clearly meet the ABCDE criteria are worth mentioning at a routine skin check if something about them feels different from the rest of your moles — dermatologists often refer to this as the "ugly duckling" sign, where a mole that simply looks unlike your other moles warrants a closer look.
How Are They Removed?
Skin tags are typically removed in seconds with a quick snip or light cautery, with essentially no downtime and minimal to no scarring. Because they're superficial growths, removal is usually straightforward and doesn't require stitches.
Benign moles can be removed by shave excision (shaving the mole flush with the skin) or punch excision (removing a small cylindrical section of tissue, sometimes requiring a stitch), depending on size and depth. Any removed tissue can be sent for pathology if there's any question about its nature, which is standard practice whenever a mole is removed for a reason beyond pure cosmetic preference.
Cosmetic Removal vs. Diagnostic Removal
Removal for cosmetic reasons (an irritating tag or a mole you simply don't want) is a separate, quick in-office procedure from removal for a suspicious growth, which follows a more thorough diagnostic workup. When a mole is removed because it's raising medical concern, the goal is complete removal with margins for pathology review, which may look slightly different from a purely cosmetic removal focused on the best aesthetic outcome.
What to Expect After Removal
Skin tag removal typically heals within a few days with no visible mark. Mole removal via shave or punch excision heals over one to two weeks, with the treated area often appearing slightly pink before fading to match surrounding skin over the following weeks to months. Sun protection on the healing area is important to minimize any visible discoloration during recovery.
Frequently Asked Questions
Are skin tags contagious?
No. Skin tags are not caused by a virus and cannot be spread to other people or other areas of your own skin through contact.
Will removing a mole leave a scar?
Most removals heal with minimal to no visible scarring, though this can vary based on the size and depth of the mole and individual healing.
Can I remove a skin tag myself at home?
This isn't recommended, since at-home removal carries a higher risk of infection, bleeding, and scarring compared to an in-office procedure.
Do moles need to be biopsied every time they're removed?
Not always — purely cosmetic removals of clearly benign-appearing growths may not require pathology, but it's routinely recommended whenever there's any uncertainty.
How quickly can a suspicious mole be evaluated?
Most practices can see a patient promptly for a concerning or rapidly changing growth, given the importance of early evaluation for skin cancer.
Get an Expert Evaluation
Our providers at Journelle Skin can determine whether your skin tag or mole is safe to remove cosmetically or needs further evaluation first. Learn more about Benign Growth Treatment and Wart Removal at Journelle Skin.