Dermatophytosis causes: Difference between revisions

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* ''T. menatagrophytes''
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|Tinea barbae
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Revision as of 20:33, 17 August 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Syed Hassan A. Kazmi BSc, MD [2]

Overview

Dermatophytes cause non-lethal infection of the superficial skin, therefore, the agents causing dermatophytosis are not life-threatening. Common genera of dermatophytes causing infections include the Epidermophyton, Microsporum and Trichophyton. The causes of dermatophytosis according to the organ system involvement include, tinea corporis which is infection of body surfaces other than the feet, groin, face, scalp hair, or beard hair; Tinea pedis which is infection of the foot; tinea cruris which is infection of the groin; tinea capitis which is infection of scalp hair; tinea unguium (dermatophyte onychomycosis) which signifies infection of the nail; tinea faecei which is infection of the face; tinea barbae which is infection of the facial hair; tinea mannum which includes infection of the hands.

Causes

Life-Threatening Causes

  • Dermatophytes cause non-lethal infection of the superficial skin, therefore, the agents causing dermatophytosis are not life-threatening.

Common Causes

The common etiologic agents of the dermatophytosis can be categorized into one of three genera:[1][2]

Causes By Organ System

The following are the causes of dermatophytosis by organ system involvement:[3][4][5][6]

Tinea Major organ system affected Genera Species
Tinea corporis
  • Body surfaces other than the feet, groin, face, scalp hair, or beard hair
Commonly:
  • T. rubrum
  • T. mentagrophytes
  • M. canis
Tinea pedis
  • Feet
Commonly:
  • T. mentagrophytes (inflammatory)
  • T. rubrum (ulcerative)
  • E. floccosum (ulcerative)
Tinea cruris
  • Groin
Commonly:
  • E. floccosum
  • T. rubrum
  • T. mentagrophytes
Tinea capitis
  • Scalp hair
Commonly:
  • M. canis
  • T. mentagrophytes
  • T. tonsurans
Tinea unguium
  • Nails
Commonly:
  • T. mentagrophytes
  • T. rubrum
  • E. floccosum
Tinea faecei
  • Face
Commonly:
  • T. rubrum
  • T. menatagrophytes
Tinea barbae
  • Facial hair
Commonly:
  • T. mentagrophytes
  • T. rubrum
Tinea mannum
  • Hands
Commonly:
  • T. rubrum

References

  1. Weitzman I, Summerbell RC (1995). "The dermatophytes". Clin. Microbiol. Rev. 8 (2): 240–59. PMC 172857. PMID 7621400.
  2. Elewski BE (1998). "Onychomycosis: pathogenesis, diagnosis, and management". Clin. Microbiol. Rev. 11 (3): 415–29. PMC 88888. PMID 9665975.
  3. Weitzman I, Summerbell RC (1995). "The dermatophytes". Clin. Microbiol. Rev. 8 (2): 240–59. PMC 172857. PMID 7621400.
  4. "Diagnosis and Management of Tinea Infections - American Family Physician".
  5. El-Gohary M, van Zuuren EJ, Fedorowicz Z, Burgess H, Doney L, Stuart B, Moore M, Little P (2014). "Topical antifungal treatments for tinea cruris and tinea corporis". Cochrane Database Syst Rev (8): CD009992. doi:10.1002/14651858.CD009992.pub2. PMID 25090020.
  6. Elewski BE (1998). "Onychomycosis: pathogenesis, diagnosis, and management". Clin. Microbiol. Rev. 11 (3): 415–29. PMC 88888. PMID 9665975.

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