From WikiProjectMed
Jump to navigation Jump to search
Onychomadesis following hand foot and mouth disease (DermNet NZ enteronail5).jpg
Onychomadesis following hand foot and mouth disease
SymptomsLoss of one or more nails[1]

Onychomadesis is a loss of nail.[1] It typically occurs in one nail when due to trauma, or in multiple nails due to systemic disease.[1] The nail generally totally detaches with a new nail then appearing.[2]

It is a periodic idiopathic shedding of the nails beginning at the proximal end, possibly caused by the temporary arrest of the function of the nail matrix.[3]: 784 [4]: 660  One cause in children is hand, foot, and mouth disease.[5]



Onychomadesis can also occur if the nail is damaged or suffers a loss of blood supply; for example, due to a bruise. The nailbed turns black, and the nail drops off shortly afterwards. It takes around 6 to 12 months to regrow.


This generally resolves without complication.

See also


  1. 1.0 1.1 1.2 Bellet, Jane Sanders (2021). "Paediatric nail disorders". In Lipner, Shari (ed.). Nail Disorders: Diagnosis and Management, An Issue of Dermatologic Clinics. Philadelphia: Elsevier. p. 232. ISBN 978-0-323-70923-1. Archived from the original on 2022-07-03. Retrieved 2022-07-01.
  2. Berker, David de (2019). "20. Diseases of the nails". In Morris-Jones, Rachael (ed.). ABC of Dermatology (7th ed.). Hoboken: Wiley Blackwell. p. 167. ISBN 978-1-119-48899-6. Archived from the original on 2022-05-16. Retrieved 2022-05-16.
  3. James WD, Berger TG, Elston DM (2006). Andrew's diseases of the skin: clinical dermatology (10th ed.). Philadelphia: Saunders Elsevier. ISBN 978-0-8089-2351-0.
  4. Freedberg IM, Fitzpatrick TB (2003). Fitzpatrick's dermatology in general medicine (6th ed.). New York, NY: McGraw-Hill. ISBN 978-0-07-138076-8.
  5. Bernier V, Labrèze C, Bury F, Taïeb A (November 2001). "Nail matrix arrest in the course of hand, foot and mouth disease". European Journal of Pediatrics. 160 (11): 649–51. doi:10.1007/s004310100815. PMID 11760019.