Published 10 October 2026 · Reviewed by Dr Sin Yong
Acrochordon is the medical term for a skin tag: a soft, skin-coloured or slightly darker growth on a narrow stalk, most often in friction zones such as the neck, eyelids, underarms and groin. They are harmless, but a sudden crop can accompany weight gain, insulin resistance or pregnancy. Removal is by snip excision, electrosurgery or CO₂ laser after examination.
Key facts
Also called
Skin tag, fibroepithelial polyp
Where
Neck, eyelids, underarms, groin, under the breasts
Why they matter
A cluster can accompany insulin resistance or weight gain
Removal
Snip, electrosurgery or CO₂ laser; never tied or cut at home
The skin tag is a frequently requested small-growth removal, and the term is referred to wherever the site separates tags from the growths that need a diagnosis first.
A stalk is what makes it a tag; a growth without a stalk gets my dermatoscope before it gets my snip.— Dr Sin Yong
Skin tags: the condition page, with the lookalikes table and what a crop of tags can signal.
Mole removal: the dermatoscopy-first rule for any growth that is dark, firm or growing.
Dark underarms: acanthosis nigricans, which shares the insulin-resistance link with a crop of tags and sits in the same folds.
One tag means little; a neck full of them, with velvety darkening in the folds, is a reason for a blood test before a removal appointment.
Not to be confused with
The stalk is what defines an acrochordon, and the dermatoscope adds a little to what the stalk already says. These are the lookalikes and the clues that separate them.
Acrochordon itself: soft, skin-coloured or slightly darker, on a narrow stalk, in a friction zone. Dermoscopy is unremarkable: smooth surface, sometimes a few fine vessels, no pigment network and no rough projections.
Filiform wart: finger-like projections with a rough surface, and under the dermatoscope tiny dotted or thrombosed vessels at the tips. It is viral and may spread.
Pedunculated seborrhoeic keratosis: waxy and brown with milia-like cysts and comedo-like openings; it can sit on a stalk, which is where the confusion arises.
Dermal naevus: dome-shaped and firm, sometimes with a hair, with a faint pigment pattern or comma vessels under the dermatoscope. It is examined before any removal.
Neurofibroma: soft and pushes into the skin with a fingertip, the buttonhole sign; a different tissue and a different conversation.
A thrombosed tag: a tag that twists on its stalk can turn black overnight. This alarms people but is usually the tag losing its blood supply; it is still examined, because a black lesion is a black lesion until a doctor has looked.
A growth that is dark, fast-growing, firm or bleeding without friction is not called a tag until it has been examined, and that rule costs nothing.
What an acrochordon is and how it is removed
Acrochordons are harmless outgrowths of skin and connective tissue on a narrow stalk. They appear where skin rubs against skin or clothing, multiply with age, weight gain and insulin resistance, and run in families. They do not turn into cancer; they are removed because they catch, bleed or are simply unwanted.
Removal takes minutes: the stalk is numbed with a drop of local anaesthetic and the tag is snipped or sealed at the base with a fine radiofrequency needle or CO₂ laser. Sparing the base is what reduces the chance of a mark. A tag that is dark, fast-growing, firm or bleeding without friction is examined before it is treated as an acrochordon. Treatment page: skin tag removal Singapore.
Acrochordon (skin tag) and its lookalikes
Lesion
Clue
Removal
Acrochordon (skin tag)
Soft, skin-coloured or slightly darker, on a stalk; neck, armpits, eyelids, groin
Snip, fine RF or CO₂ laser at the base; sparing the base keeps marking to a minimum
Filiform wart
Finger-like projection, rougher surface, may spread
It is not advised. Tying or cutting a tag at home risks bleeding, infection and a mark, and it skips the one step that matters: confirming the growth is a tag rather than a wart, a mole or a keratosis on a stalk. In clinic the area is numbed with local anaesthetic and the tag is removed by snip excision, electrosurgery or CO2 laser, chosen by its size, base and site.
Multiple tags are statistically associated with insulin resistance, obesity and metabolic syndrome in the published literature; the tags themselves are harmless, but a sudden crop can be the skin flagging something internal. One tag means nothing. A neck full of them, especially with velvety darkening of the folds, is a reason Dr Sin Yong may suggest a blood test alongside removal.
No; they are benign. A growth that is changing, bleeding or irregular is examined to make sure it is not something else.
A fully removed tag does not usually regrow, but new ones can appear in the same friction zone.
