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Infection2017; 46(1); 135-137; doi: 10.1007/s15010-017-1067-3

Tinea corporis caused by Trichophyton equinum in a rider and review of the literature.

Abstract: Trichophyton equinum is a zoophilic dermatophyte usually causing ringworm in horses. Cases of skin infections in humans are very rare. CASE REPORT : ​We describe a case of tinea corporis caused by T. equinum on a buttock of a rider who often rode bareback with short trousers. Conclusions: Although T. equinum was considered in the past as a strict zoophilic dermatophyte, our case report confirms that it can cause dermatophytoses also in humans. A review of epidemiological and clinical features of human infections caused by T. equinum is presented.
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Publication Date: 2017-09-06 PubMed ID: 28879496DOI: 10.1007/s15010-017-1067-3Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research study discusses a rare case of human skin infection caused by Trichophyton equinum, a fungal organism typically responsible for ringworm in horses. The infection was found in a person who regularly rode horses bareback using short trousers. The report expands on the clinical characteristics and epidemiology of human infections by this typically animal-restricted fungus.

Case Report

The main focus of this paper is a case report of tinea corporis – a type of skin infection. The infection occurred in a rider who often rode bareback with short trousers. The infection was caused by:

  • Trichophyton equinum – a type of dermatophyte, a group of fungi that cause skin, hair and nail infections.
  • The dermatophyte is generally zoophilic, which means it typically infects animals, more specifically, horses.
  • In this particular case, the rider’s bareback riding habits and attire have likely made them susceptible to the infection.

T. equinum Infections in Humans

The paper also discusses the role of T. equinum in human infections. Contrary to previous beliefs that this type of dermatophyte strictly affected animals, the research reveals its potential to cause dermatophytoses, or fungal skin diseases, in humans. Key points about T. equinum infections in humans are:

  • Such infections are quite rare due to the zoophilic nature of the fungus.
  • However, in some cases, like the one presented in this paper, the fungus can indeed cause infections in humans.

Review of Epidemiological and Clinical Features

In addition to describing the specific case, this paper also provides a comprehensive review of the epidemiology and clinical features of T. equinum infections in humans:

  • Epidemiology refers to the study of the distribution and determinants of health-related events, including diseases, and is crucial for planning and evaluating strategies to prevent illness and as a guide to management.
  • Clinical features of the disease caused by this fungus are also discussed. These would relate to the symptoms and characteristics of the condition caused by the fungus, such as the nature and site of any lesions, the course of the disease, and its impact on the sufferer’s general wellbeing.

Cite This Article

APA
Veraldi S, Genovese G, Peano A. (2017). Tinea corporis caused by Trichophyton equinum in a rider and review of the literature. Infection, 46(1), 135-137. https://doi.org/10.1007/s15010-017-1067-3

Publication

Infection
ISSN: 1439-0973
NlmUniqueID: 0365307
Country: Germany
Language: English
Volume: 46
Issue: 1
Pages: 135-137

Researcher Affiliations

Veraldi, Stefano
  • Department of Pathophysiology and Transplantation, Università degli Studi di Milano, I.R.C.C.S. Foundation, Cà Granda Ospedale Maggiore Policlinico, Milan, Italy. stefano.veraldi@unimi.it.
Genovese, Giovanni
  • Department of Pathophysiology and Transplantation, Università degli Studi di Milano, I.R.C.C.S. Foundation, Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.
Peano, Andrea
  • Department of Veterinary Sciences, Sector of Parasitology, University of Turin, Turin, Italy.

MeSH Terms

  • Animals
  • Antifungal Agents / therapeutic use
  • Buttocks / parasitology
  • Griseofulvin / therapeutic use
  • Horse Diseases / drug therapy
  • Horse Diseases / microbiology
  • Horse Diseases / transmission
  • Horses
  • Humans
  • Male
  • Middle Aged
  • Naphthalenes / therapeutic use
  • Terbinafine
  • Tinea / diagnosis
  • Tinea / microbiology
  • Tinea / transmission
  • Tinea / veterinary
  • Treatment Outcome
  • Trichophyton / isolation & purification

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This article includes 19 references
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Citations

This article has been cited 12 times.
  1. Gupta AK, Wang T, Susmita, Talukder M, Bakotic WL. Global Dermatophyte Infections Linked to Human and Animal Health: A Scoping Review. Microorganisms 2025 Mar 3;13(3).
    doi: 10.3390/microorganisms13030575pubmed: 40142467google scholar: lookup
  2. Veraldi S, Bortoluzzi P, Germiniasi F. Tinea corporis caused by Trichophyton Equinum as occupational infection in riders. Infection 2024 Dec;52(6):2523-2524.
    doi: 10.1007/s15010-024-02333-7pubmed: 38967767google scholar: lookup
  3. Drerup KA, Schwarz T, Brasch J. [Trichophyton equinum meets Chanel]. Dermatologie (Heidelb) 2023 Sep;74(9):707-710.
    doi: 10.1007/s00105-023-05162-1pubmed: 37280370google scholar: lookup
  4. Uhrlaß S, Mayser P, Koch D, Mütze H, Krüger C, Schulze I, Nenoff P. [Zoophilic dermatophytes during coronavirus pandemic in Germany]. Dermatologie (Heidelb) 2023 Jun;74(6):430-439.
    doi: 10.1007/s00105-023-05150-5pubmed: 37133787google scholar: lookup
  5. Rambozzi L, Meneguz PG, Molinar Min AR, Pasquetti M, Peano A. Concurrent Chorioptic Mange and Dermatophytosis in Dairy Goats: A Case Report. Vet Sci 2022 Dec 6;9(12).
    doi: 10.3390/vetsci9120677pubmed: 36548838google scholar: lookup
  6. Moskaluk AE, VandeWoude S. Current Topics in Dermatophyte Classification and Clinical Diagnosis. Pathogens 2022 Aug 23;11(9).
    doi: 10.3390/pathogens11090957pubmed: 36145389google scholar: lookup
  7. Clothier KA, Watson KD, Mete A, Giannitti F, Anderson M, Munk B, McMillin S, Clifford DL, Rudd J, Shirkey N, Famini D, Woods L. Generalized dermatophytosis caused by Trichophyton equinum in 8 juvenile black bears in California. J Vet Diagn Invest 2022 Mar;34(2):279-283.
    doi: 10.1177/10406387211061143pubmed: 34841977google scholar: lookup
  8. Segal E, Elad D. Human and Zoonotic Dermatophytoses: Epidemiological Aspects. Front Microbiol 2021;12:713532.
    doi: 10.3389/fmicb.2021.713532pubmed: 34421872google scholar: lookup
  9. Leung AK, Lam JM, Leong KF, Hon KL. Tinea corporis: an updated review. Drugs Context 2020;9.
    doi: 10.7573/dic.2020-5-6pubmed: 32742295google scholar: lookup
  10. Gnat S, Łagowski D, Nowakiewicz A, Dyląg M. Tinea corporis caused by Trichophyton equinum transmitted from asymptomatic dogs to two siblings. Braz J Microbiol 2020 Sep;51(3):1433-1438.
    doi: 10.1007/s42770-019-00204-0pubmed: 31820297google scholar: lookup
  11. Metin B, Heitman J. She Loves Me, She Loves Me Not: On the Dualistic Asexual/Sexual Nature of Dermatophyte Fungi. Mycopathologia 2020 Feb;185(1):87-101.
    doi: 10.1007/s11046-019-00390-3pubmed: 31578669google scholar: lookup
  12. Kandemir H, Dukik K, Hagen F, Ilkit M, Gräser Y, de Hoog GS. Polyphasic Discrimination of Trichophyton tonsurans and T. equinum from Humans and Horses. Mycopathologia 2020 Feb;185(1):113-122.
    doi: 10.1007/s11046-019-00344-9pubmed: 31278475google scholar: lookup
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