World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0003093096
Reproduction Date:

Title: Onycholysis  
Author: World Heritage Encyclopedia
Language: English
Subject: Subungual hematoma, Psoriatic arthritis, Nail disease, List of cutaneous conditions, ICD-10 Chapter XII: Diseases of the skin and subcutaneous tissue
Publisher: World Heritage Encyclopedia


Left hand onycholysis: ring and little fingers affected
Classification and external resources
ICD-10 L60.1
ICD-9-CM 703.8
DiseasesDB 9236
MeSH D054039

Onycholysis refers to the detachment of the nail from the nail bed, usually starting at the tip and/or sides.[1] On the hands, it is said to occur particularly on the ring finger but can occur on any of the fingernails. It may also happen to toenails.

Onycholysis can occur in many conditions, including psoriasis. In thyrotoxicosis it is thought to be due to sympathetic overactivity.[2] It may also be seen in infections or trauma.[3]


  • Etymology 1
  • Causes 2
  • See also 3
  • References 4


Onycho-, from Ancient Greek ónuks, meaning nail, and Ancient Greek lúsis, meaning a loosening.


  • Idiopathic
  • Trauma, excessive manicuring
  • Infection: especially fungal
  • Skin disease: psoriasis, dermatitis
  • Impaired peripheral circulation e.g. Raynaud's
  • Systemic disease: hyper- and hypothyroidism, reactive arthritis, porphyria cutanea tarda
  • Sometimes a reaction to detergents (e.g. washing dishes with bare hands, using detergent-based shampoos or soaps).
  • Patients with hepatocellular dysfunction may develop hair-thinning or hair loss and nail changes such as clubbing,leukonychia (whitening), or onycholysis, affecting the nails of the hands and feet.[4]

See also


  1. ^
  2. ^
  3. ^
  4. ^

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.