Ingrown nail

Ingrown nail
Other namesUnguis incarnatus or Ingrown toenail[1]
An ingrown and infected toenail on the large toe of the right foot
SpecialtyOrthopedics

An ingrown nail, also known as onychocryptosis, from Ancient Greek ὄνυξ (ónux), meaning "nail", and κρυπτός (kruptós), meaning "hidden", is a common form of nail disease. It is an often painful condition in which the nail grows so that it cuts into one or both sides of the paronychium or nail bed. While ingrown nails can occur in the nails of both the hands and the feet, they occur most commonly with the toenails (as opposed to fingernails).

A common misconception is that the cause of an ingrown toenail is the nail growing into the paronychium, but it can also be caused by overgrown toe skin.[2] The condition is caused by a microbial inflammation of the paronychium causing a granuloma within which the nail is buried.[3] A true ingrown toenail is caused by actual penetration of flesh by a sliver of toenail.[4]

  1. ^ James, William; Berger, Timothy; Elston, Dirk (2002). Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. p. 789. ISBN 978-0-7216-2921-6.
  2. ^ Chapeskie H (2008). "Ingrown toenail or overgrown toe skin?". Canadian Family Physician. 54 (11): 1561–2. PMC 2592332. PMID 19005128. Archived from the original on 14 March 2011.
  3. ^ Ingrown toenail: Overview. Institute for Quality and Efficiency in Health Care (IQWiG). 28 June 2018.
  4. ^ Ingrown Toenail: "Ingrown Toenail – NHS Choices". Archived from the original on 30 November 2010. Retrieved 30 November 2010.