Laser and Skin

Skin tags: small, harmless, annoying

Skin tags, known clinically as acrochordons, are soft, harmless growths that appear on 50 to 60% of adults at some point, most often after the age of 40. They usually measure 1 to 5 millimetres, though a few reach 1 to 2 centimetres, and sit where skin rubs against skin: the neck, armpits, eyelids, groin and the fold under the breasts. Removal takes a single short appointment, whether the method is scissors, an electric current, freezing or a laser, and once a tag is off it does not come back.

What a skin tag actually is

A skin tag, known to dermatologists as an acrochordon or fibroepithelial polyp, is a small flap of skin hanging from a thin stalk. Inside it is loosely arranged collagen and a scattering of small blood vessels, covered by a thin layer of epidermis, with no cartilage, gland or hair follicle involved. Most measure 1 to 5 mm across, though a minority on the neck or in a skin fold grow to 1 or 2 cm. Between 50 and 60% of adults develop at least one during their life, the count tends to rise after age 40, and skin tags become rare again after 70.

They form where skin rubs against skin or against clothing and jewellery: the sides of the neck, the armpits, the groin, the eyelids and the fold under the breasts are the classic sites. Men and women get them in similar numbers. A skin tag can look a little like a wart from across the room, but a wart is a viral infection of the skin and a skin tag is not, which is why a skin tag does not spread from one part of the body to another the way a wart sometimes does.

How skin tags are removed

Removal is a single, short procedure, and 5 techniques cover almost every case. Snip excision uses fine scissors to cut the stalk, usually after a local anaesthetic injection or a numbing cream applied 20 to 30 minutes beforehand. Electrocautery, also called electrosurgery, passes a fine electric current through the stalk, cutting and sealing the tiny blood vessel in one motion, so bleeding stays minimal. Cryotherapy freezes the tag with liquid nitrogen until it turns white and drops off over 1 to 2 weeks. Ligation ties a thread or a small band around the stalk to cut off its blood supply, and the tag dries up and comes away within about a week. A carbon dioxide or 532 nanometre laser vaporises or seals very small tags and is used mostly near the eyelid, where precision matters most, a spot covered in the guide on mole removal as well.

A single visit commonly clears several tags at once, which is why many clinics quote a flat fee for the first tag and a smaller add-on charge for each further one. A scab or crust forms over the wound and falls off within 5 to 10 days, and sun protection for the following 4 to 6 weeks stops the healing skin from darkening. Anyone taking a blood thinner, such as warfarin, aspirin or a direct oral anticoagulant, should say so when booking: these medications make bleeding during and after the procedure heavier than usual, and the clinic may ask a prescriber first or choose electrocautery over snip excision to keep bleeding to a minimum. Cutting, tying off or burning a tag yourself is not a good idea: bleeding tends to be heavier than expected, infection is a real risk, and nobody has confirmed beforehand that the growth was actually a harmless skin tag rather than something needing a biopsy.

Who gets them and why

Age is the strongest single factor: skin tags are uncommon before 30, become steadily more common through the 40s and 50s, then plateau. Obesity and type 2 diabetes both raise the odds, largely through insulin resistance, which several studies link to skin tags independent of body weight. Pregnancy is another trigger, driven by higher levels of oestrogen, progesterone and growth hormone, and tags that appear during pregnancy sometimes shrink again afterwards. A family history matters too: people with a parent or sibling who has several tags are more likely to develop several themselves.

Once someone has one skin tag, more tend to follow: it is common to see 5, 10 or more small tags clustered in the same skin fold over the years rather than a single one appearing in isolation. The tags themselves carry essentially no risk of turning into skin cancer; a single case report of a skin tag containing a squamous cell carcinoma exists in the medical literature, against a background of many millions of tags removed worldwide, which puts the risk close to zero.

When a lesion needs a second look

A handful of look-alikes matter more than the skin tag itself. Seborrhoeic keratoses, warts, moles, neurofibromas and, rarely, a basal cell carcinoma or an amelanotic melanoma can all be mistaken for a tag at a glance, a mix-up the warts guide also touches on. The signal to get an opinion before anything is removed is a lesion that grows visibly within 2 to 4 weeks, changes colour, bleeds without being caught on clothing or jewellery, or develops an irregular, crusted surface. A pigmented or unusual-looking growth is checked with a dermatoscope and, in doubt, sent for a biopsy rather than snipped off and discarded.

Because removal counts as cosmetic in almost every health system, it is rarely covered by public insurance: the NHS, for example, does not fund skin tag removal for that reason. Private prices commonly run from about 50 to 150 GBP, or 75 to 200 USD, for a visit that clears several tags at once, with a lower fee for each tag beyond the first. Clearing multiple tags in one sitting is the norm, not the exception, since the extra time for tag number 2 or 3 is only seconds once the equipment is already out.

Questions to ask before you book

Frequently asked

Are skin tags contagious?

No. Unlike a wart, a skin tag is not caused by a virus, so it cannot spread to another person or to another part of your own body.

Can I remove a skin tag myself?

It is not recommended. Bleeding tends to be heavier than expected, infection is a real risk, and nobody has confirmed that the growth is really a harmless skin tag rather than something that needs a biopsy first.

Will a removed skin tag grow back?

The same tag does not return once it is fully removed, but new tags can form elsewhere on the body over the following years, especially in skin folds.

Does health insurance cover removal?

Usually not. Removal counts as cosmetic in most health systems, including the NHS, so a private fee of about 50 to 150 GBP or 75 to 200 USD per visit is the norm.

Who is most likely to get skin tags?

People over 40, people with obesity or type 2 diabetes and pregnant women are more likely to develop them, and a family history raises the odds further.

How long does the area take to heal?

Most methods leave a small scab that falls off within 5 to 10 days, after which sun protection for 4 to 6 weeks stops the fresh skin from darkening.

Sources

• NHS: Skin tags · size about 2mm to 5cm, common sites, three removal methods (heat, freezing, cutting), not funded by the NHS, risks of removing one yourself
• DermNet NZ: Skin tag (acrochordon) · size 1mm to 5cm, tissue composition, risk factors including obesity and type 2 diabetes, four removal techniques (cryotherapy, excision, electrosurgery, ligation)
• StatPearls: Skin Tag (Acrochordon), NCBI Bookshelf · prevalence 50 to 60% of adults, peak after the fourth decade and rare after the seventh, typical size 1 to 5mm, risk factors, treatment techniques, complications, differential diagnosis

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This guide is for general information. It does not replace medical or professional cosmetic advice or an examination.