Trichophyton tonsurans infection manifesting as multiple concentric annular erythemas

Takeshi Ouchi, Keisuke Nagao, Yasuki Hata, Tomoko Otuka, Toyoko Inazumi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We report a case of dermatophytosis in a Judo wrestler caused by Trichophyton tonsurans (T. tonsurans) with clinical features that mimicked the concentric rings of tinea imbricata. Tinea imbricata is a unique dermatophytosis caused by Trichophyton concentricum (T. concentricum), observed endemically in subtropical to torrid zones and characterized by impressive concentric rings. We found three similar cases of the dermatophytosis in the literature that were reported as tinea pseudoimbricata or tinea indecisiva. All of these cases were associated with systemic or local immunosuppression, perhaps simulating the mechanism of tinea imbricata, which is known to involve the lack of delayed type hypersensitivity to T. concentricum. These cases imply that iatrogenic immunosuppression may perhaps play an important role in the development of the unique clinical features mimicking tinea imbricata. Furthermore, three of the four cases, including the presented case, were caused by T. tonsurans. It may be necessary to consider T. tonsurans infection when multiple concentric erythemas are encountered.

Original languageEnglish
Pages (from-to)565-568
Number of pages4
JournalJournal of Dermatology
Issue number7
Publication statusPublished - 2005 Jul


  • Dermatophytosis
  • Tinea imbricata
  • Tinea pseudoimbricata
  • Trichophyton concentricum
  • Trichophyton tonsurans

ASJC Scopus subject areas

  • Dermatology


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