Skin tags are troubleandriano.cz/Shutterstock
Skin tags, medically termed as acrochordons or fibroepithelial polyps (FEP), are just a tiny benign bit of flesh that is typically connected to the underlying skin by a thin stalk. Yeah, gross. On the exterior, they look like minuscule bits of “hanging” skin that are typically taller than wide. These growths are seen in approximately half of all people and can form for a variety of reasons. However, they turn up more often during pregnancy, in diabetics, obese individuals, and those that have a family history of skin tags. They are also more common as you age—and men and women suffer them at about the same rate.
While they can turn up anywhere, skin tags tend to appear where there is frequent friction, such as the neck, breasts, groin, and underarms. (Here are 16 more weird things you should know about your underarms.) Ultimately, there is no evidence that skin tags will lead to any serious skin condition: They’re mostly an aesthetic annoyance. Regardless, most dermatologists encourage you to have them checked out—and removed, if you want. The only link to danger is from one study from the Indian Journal of Dermatology, which suggested that skin tags may be a sign of underlying heart issues. You could get your heart checked out, but the one research connection shouldn’t concern anyone too much.
Skin tags are cancerousShebeko/Shutterstock
Dermatologists say nay: The tags are almost never cancerous and don’t need to be removed; in fact, they’re (almost!) always benign. (By the way, don’t fall for any of these other 50 cancer myths.) And while many people opt to remove them due to discomfort or for cosmetic reasons, there is no harm in leaving them be. There are extremely rare exceptions to this rule: In one study, two patients with known basal cell nevus syndrome (BCNS) were found to have multiple basal cell carcinomas that resembled ordinary skin tags. “There are rare cases where skin cancers, such as basal cell carcinoma, squamous cell carcinoma, and even melanoma, can mimic a skin tag,” says dermatologist Avnee Shah, MD. “Going to a board-certified dermatologist assures a trained eye is examining the lesion and determining the risk of a more harmful condition masquerading as a skin tag.” To be safe, if any tag is growing, changing color, or bleeding and itching, it’s definitely time to see an expert.