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[Arthroderma crocatum on human skin].

Jochen Brasch1, Vera Beck-Jendroschek2, Karin Voss2

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Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
|January 13, 2021
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Arthroderma crocatum, a rare dermatophyte, was identified on human skin in Germany. This finding suggests its prevalence may be underestimated, highlighting the need for further dermatophyte research.

Keywords:
DermatophytesDiagnosticsEpidemiologyPathogenicitySequencing

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Area of Science:

  • Medical Mycology
  • Dermatology
  • Infectious Diseases

Background:

  • Arthroderma (A.) crocatum is a geophilic dermatophyte.
  • It is considered mostly apathogenic.
  • Its occurrence in human infections is rare.

Purpose of the Study:

  • To describe the characteristics and epidemiology of Arthroderma (A.) crocatum.
  • To report three cases of A. crocatum isolated from human skin in Germany.
  • To emphasize the importance of diagnostic methods for identifying rare dermatophytes.

Main Methods:

  • Microscopic examination using KOH mount.
  • Fungal culture for isolation and identification.
  • Genetic analysis for definitive species confirmation.

Main Results:

  • Arthroderma (A.) crocatum was successfully isolated from human skin samples in Germany.
  • The study details the morphological characteristics of the isolated fungi.
  • Epidemiological data and observations on gymnothecia are presented.

Conclusions:

  • The combination of KOH mount, culture, and genetic analysis is crucial for accurate diagnosis.
  • Arthroderma (A.) crocatum may be more prevalent in human infections than currently recognized.
  • Further studies are needed to understand the true prevalence and clinical significance of A. crocatum.