Skin nontumor

Infectious disorders


Topic Completed: 1 July 2011

Minor changes: 16 November 2020

Copyright: 2002-2021,, Inc.

PubMed Search: Fungi - Onychomycosis [title]

Nat Pernick, M.D.
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Cite this page: Pernick N. Fungi-Onychomycosis. website. Accessed November 29th, 2021.
Definition / general
  • Spread of fungi to nail apparatus, caused by Trichophyton rubrum and Trichophyton mentagrophytes; also Candida albicans and Scopulariopis brevicaulis
  • Often multiple fungal species
  • Common in patients with diabetes; associated with NOT washing feet daily (Int J Nurs Stud 2011;48:1101)
  • Proposed clinical classification: distal and lateral subungual (beneath the nail), superficial, endonyx (diffuse milky-white discolouration of affected nail but no nail bed hyperkeratosis and no onycholysis), proximal subungual, mixed, totally dystrophic and secondary onychomycosis (J Am Acad Dermatol 2011;65:1219)
Clinical images

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Toenail infections

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