Onychomycosis caused by Scytalidium dimidiatum

J Am Acad Dermatol. 1996 Aug;35(2 Pt 2):336-8. doi: 10.1016/s0190-9622(96)90664-7.


We report a case of onychomycosis caused by Scytalidium dimidiatum (syn., Hendersonula toruloidea) in a patient who did not live in an endemic area. This nondermatophyte mold may produce disease indistinguishable from dermatophyte fungi, but it does not respond to current systemic antimycotic therapy. Distal subungual onychomycosis, lateral onycholysis followed by lateral nail plate invasion, and chronic paronychia are common nail presentations.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Chronic Disease
  • Diagnosis, Differential
  • Foot Dermatoses / microbiology
  • Hand Dermatoses / microbiology
  • Humans
  • Male
  • Mitosporic Fungi / isolation & purification*
  • Nail Diseases / microbiology
  • Onychomycosis / diagnosis*
  • Onychomycosis / microbiology
  • Paronychia / microbiology