A skin tag is not a wart. They look similar at first glance, but they have different causes, different textures, and different risks. Warts are caused by a virus and can spread to other people or other parts of your body. Skin tags are not viral, not contagious, and generally harmless. Telling them apart is straightforward once you know what to look for.
What Causes Each One
Warts are caused by the human papillomavirus (HPV). Several strains are responsible, with HPV types 2 and 4 being the most common culprits behind ordinary warts on the hands and fingers. The virus enters through tiny breaks in the skin and triggers excess cell growth, forming a raised bump. Because warts are viral, they can spread through direct contact, shared surfaces like gym floors, or even from one part of your body to another if you pick at them.
Skin tags have nothing to do with a virus. They form when skin rubs against skin or clothing, which is why they tend to appear in folds and creases. They’re simply small overgrowths of normal skin tissue. You can’t catch a skin tag from someone else, and touching one won’t cause new ones to appear elsewhere on your body.
How They Look and Feel
Texture is the fastest way to tell the two apart. Warts feel rough and grainy, like a tiny patch of sandpaper. They sit firmly on the skin and often contain small black dots, which are clotted blood vessels inside the growth (not seeds, despite the common nickname). Common warts are usually skin-colored, white, or light brown, and they range from pinhead- to pea-sized.
Skin tags feel soft and smooth. They’re typically the same color as your skin or slightly darker, sometimes pink. The most distinctive feature is their shape: skin tags usually hang from the skin on a thin stalk, like a tiny flap, rather than sitting flat against the surface. When irritated, they can turn red, but they’re painless unless something catches on them.
Where They Typically Appear
Location offers another strong clue. Warts favor areas exposed to contact and pressure. Common warts show up most often on the backs of hands, fingers, and around the nails. Plantar warts grow on the soles of the feet, where the pressure of walking pushes them inward. Flat warts tend to cluster on children’s faces, men’s beard areas, and women’s legs. In short, warts gravitate toward hands, feet, and faces.
Skin tags prefer spots where skin folds over itself: the neck, armpits, under the breasts, the groin, and the eyelids. If you find a soft, dangling growth in a skin fold, it’s almost certainly a skin tag rather than a wart.
Risk Factors for Skin Tags
Anyone can develop skin tags, but certain factors make them more likely. People who are overweight tend to have more skin-on-skin friction, which increases the chance of developing them. There’s also a well-documented link to insulin resistance and type 2 diabetes. A 2007 study found that people with multiple skin tags had a higher risk of diabetes, and more recent research has connected skin tags to elevated cholesterol in people with type 2 diabetes. If you notice a sudden increase in skin tags, especially alongside other risk factors like a family history of diabetes or weight gain, it’s worth mentioning to your doctor.
Warts, by contrast, are purely opportunistic. Your risk depends on exposure to HPV and the strength of your immune response. Children and people with weakened immune systems get warts more frequently.
Why You Shouldn’t Use Wart Remover on Skin Tags
Because the two growths look somewhat alike, many people assume that an over-the-counter wart remover will work on skin tags. It won’t, and it can actually cause harm. Wart removers contain salicylic acid, a strong chemical designed to break down the tough, hardened tissue of a wart. Skin tags are soft and delicate. Applying wart remover to a skin tag can burn the surrounding healthy skin, leading to irritation and scarring. There are no specifically licensed over-the-counter products for skin tag removal.
How Each One Is Removed
Most warts eventually clear on their own as your immune system fights off the virus, though this can take months or even years. Over-the-counter salicylic acid treatments and freezing kits can speed the process along. Stubborn warts may need professional treatment from a dermatologist.
Skin tags don’t go away on their own, but they also don’t need to be removed unless they bother you cosmetically or get caught on jewelry and clothing. If you do want one removed, a dermatologist can handle it quickly with one of three common approaches:
- Snipping: The area is numbed, and the tag is cut off with sterile scissors or a blade. A solution is applied to stop any minor bleeding.
- Freezing (cryosurgery): Liquid nitrogen is applied to the base of the tag, destroying it. A small blister or scab forms and falls off within days, taking the tag with it.
- Electrodesiccation: A tiny needle delivers an electrical current that destroys the tag. A scab forms and heals within one to three weeks.
All three are quick office procedures with minimal downtime. The key difference from wart treatment is that skin tags, once removed, don’t come back in the same spot because there’s no underlying virus driving regrowth. New skin tags can still form elsewhere if the contributing factors (friction, weight, metabolic changes) remain.
A Quick Comparison
- Texture: Warts are rough and firm. Skin tags are soft and floppy.
- Shape: Warts sit flat against the skin. Skin tags hang from a stalk.
- Cause: Warts are caused by HPV. Skin tags result from friction.
- Contagious: Warts can spread to others and to new areas on your own body. Skin tags cannot.
- Black dots: Warts often contain them. Skin tags never do.
- Location: Warts favor hands, feet, and face. Skin tags favor skin folds like the neck, armpits, and groin.
If you’re still unsure what you’re looking at, the stalk test is your best friend. Gently feel the base of the growth. If it narrows into a thin connector before attaching to your skin, it’s very likely a skin tag. If the growth feels like a solid, rough lump sitting directly on the surface, it’s more consistent with a wart.