Depending on where your skin tags are located, you might not choose any skin tag treatment — out of sight can lead to out of mind. However, you might want to seek skin tag treatment for cosmetic reasons if, for instance, they are on your eyelids and detract from your appearance. Another reason to have a skin tag removed is if it is on an area that gets a lot of friction, even just from wearing clothes, causing irritation and bleeding.
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What are some clear signs you should ask your dermatologist whether or not a mole needs a biopsy? If your mole is asymmetrical, has an irregular border, contains different colors, has a diameter larger than a pencil eraser, or is evolving in some way, you should mention it to your doctor. These are known as the ABCDEs of melanoma, according to the American Academy of Dermatology, because they signify when a mole may be cancerous.
A mole, known by the medical term nevus, is a brown or black growth that occurs on the skin when cells grow in a cluster, rather than spread out. Moles, which can appear anywhere on the skin’s surface, may be present at birth or develop later in life. Over time, some moles change, others disappear and still others remain the same. People with fair complexions, red or blond hair, and blue or green eyes are more apt to have moles.
Susan Besser, MD, a family medicine specialist with Mercy Medical Center in Baltimore, says that if skin tags “get large, change color, or become infected or ulcerated, you need to see your doctor. In those cases, it may not be a simple skin tag and further evaluation is needed.” By and large, Todd Minars, MD, of MINARS Dermatology in Hollywood, Florida, states, “Skin tags are harmless. If they do not bother you, then there is no need to treat them.”
If the skin tag is very small, the first thing Geraghty does is spray the bump with cold liquid nitrogen, a non-toxic substance. It's sprayed out of a can and is approximately -320 degrees Fahrenheit. “We direct this very cold spray of gas onto the spot for a few seconds, then we take a break and then we do a few seconds more and usually that’s enough to make the skin tag fall off within a few days,” said Geraghty.
Dr. Lam performs careful mole removal based on the type of mole one has. If the mole is relatively flat and not very unsightly, he may elect to cauterize it off to minimize the cost and recovery compared to a surgically incised mole removal. However, if the mole is elevated and/or unsightly, he may excise the mole to ensure that it is properly eradicated since cautery can lead to recurrence. As seen in the Figure, elevated moles have a portion that remains under the skin that will lead to recurrence if not excised, so cauterization of raised moles most oftentimes fails.
But there’s an even bigger reason you should visit an expert. After dermatologists remove a growth, they’ll look at it under a microscope. “There are things that look like skin tags but are cancerous,” says Dr. Rossi. That doesn’t mean you should freak out if you do find a skin tag. Most will just be benign, but you won’t know for sure until you’ve asked. Plus, checking a skin tag is a “good excuse” to get your doctor to check the rest of your body for skin cancer and atypical or malignant growths, says Dr. Rossi. Next, read up on these things you should never, ever do to your skin.
Moles can be removed a number of ways, most commonly by numbing the area and then shaving them off or cutting them out and closing the area with stiches. The method of removal is determined by a number of factors including appearance, size, location, and type of mole. For example, if a mole is just bothersome because it is raised, shaving it flat is usually the best approach. Similarly, if a mole is abnormal appearing and small, it also is typically shaved. Conversely, moles that are growing irritated hairs are usually best treated with complete removal and closure with stiches. Moles can grow back after shaving (and occasionally even after removing and closing area with stiches).

Insulin resistance, which may lead to type 2 diabetes and prediabetes, may also play a role in the development of skin tags. People with insulin resistance don’t absorb glucose effectively from the bloodstream. According to a 2010 study, the presence of multiple skin tags was associated with insulin resistance, a high body mass index, and high triglycerides.
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