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Skin tags

Medical Professionals

Professional Reference articles are designed for health professionals to use. They are written by UK doctors and based on research evidence, UK and European Guidelines. You may find the Liquid nitrogen treatment article more useful, or one of our other health articles.

Synonyms: acrochordon, soft fibromas, fibroepithelial polyps, fibroma pendulans

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What are skin tags?

Skin tags are small, often pedunculated, skin-coloured or brown papules that occur most frequently where there are skin folds. Common sites are the neck, axillae, groin and eyelids. They are also known as acrochordons. They are usually 0.2 to 0.5 cm in diameter.

How common are skin tags? (Epidemiology)1

  • Skin tags are very common and may occur in up to half of the population.

  • They occur in men and in women and incidence increases with age.

  • They occur more commonly in pregnancy.

  • The most common sites for skin tags are the neck, the axillae and the groin.

  • They are more common in patients with type 2 diabetes and those with obesity and they appear to have an association with the metabolic syndrome.2

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Skin tag causes (aetiology)3

  • It may be that skin tags are caused by irritation and chaffing as skin folds rub together.

  • They may be more common at sites where rubbing of clothing over skin occurs.

  • Insulin resistance may play a part.4

  • Human papillomavirus (HPV) may possibly play a role in pathogenesis.5


Diagnosis is usually apparent from the typical appearance. Skin tags are usually pedunculated and have been described as looking as though they hang from the skin. They may also be sessile.

Skin tags on neck

Skin tags

By Jmarchn, CC BY-SA 3.0, via Wikimedia Commons

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Differential diagnosis

  • Filiform warts have fine finger-like projections on the surface and tend to be firmer on palpation.

  • Melanocytic naevi can also be pedunculated but have a broader base.

  • Molluscum contagiosum lesions tend to have broader bases, be dome-shaped, and have a dimpled centre.

  • Seborrhoeic keratoses have a broad base.

  • Multiple skin tags are seen in Birt-Hogg-Dubé (BHD) syndrome - a rare, autosomal dominant inherited dermatosis characterised by multiple skin lesions developing in adulthood, mainly on the face, neck and upper body. As well as skin tags, those affected have fibrofolliculomas and trichodiscomas - benign skin tumours forming around hair follicles.6

Primary care management

Skin tags do not have malignant potential but can be removed due to irritation or for cosmetic reasons, although this usually has to be done privately rather than by the NHS.

Small skin tags may be removed by snipping off with a pair of sharp scissors or by applying a ligature round the base. If the base is fine no anaesthetic is needed and little bleeding occurs. Cryotherapy is sometimes also used.

Larger ones will need local anaesthetic and can be removed by shave and cautery, or by cutting cautery alone.

Further reading and references

  • Skin tags; Primary Care Dermatology Society (PCDS)
  1. Higgins JC, Maher MH, Douglas MS; Diagnosing Common Benign Skin Tumors. Am Fam Physician. 2015 Oct 1;92(7):601-7.
  2. Wali V, Wali VV; Assessment of Various Biochemical Parameters and BMI in Patients with Skin Tags. J Clin Diagn Res. 2016 Jan;10(1):BC09-11. doi: 10.7860/JCDR/2016/15994.7062. Epub 2016 Jan 1.
  3. Skin Tags; DermNet NZ
  4. Barbato MT, Criado PR, Silva AK, et al; Association of acanthosis nigricans and skin tags with insulin resistance. An Bras Dermatol. 2012 Jan-Feb;87(1):97-104.
  5. Gupta S, Aggarwal R, Gupta S, et al; Human papillomavirus and skin tags: is there any association? Indian J Dermatol Venereol Leprol. 2008 May-Jun;74(3):222-5.
  6. Birt-Hogg-Dubé syndrome; DermNet NZ

Article history

The information on this page is written and peer reviewed by qualified clinicians.

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