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Trichophyton indotineae infections and other severe or antifungal-resistant dermatophytoses


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Dermatophytosis (ringworm, tinea, jock itch, athlete’s foot) is a very common and typically minor infection of the skin caused by dermatophyte fungi.1 In the past decade, severe or antifungal-resistant dermatophytoses have become a global public health concern, including in the United States.

The AAD has assembled resources on Trichophyton indotineae and other severe or antimicrobial-resistant dermatophytes. These resources include information sheets on disease recognition, diagnosis, and treatment options, but do not constitute a clinical guideline. The AAD/ILDS emerging diseases registry helps to gather information on severe or antimicrobial-resistant dermatophytosis cases.2 This content was developed by the Academy’s Emerging Diseases Task Force and Avrom S. Caplan, MD, FAAD.

Image of a man's back showing signs of infection by Trichophyton indotineae
Emerging diseases dermatology registry

Report suspected cases of antifungal-resistant dermatophytosis.

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Recognizing Trichophyton indotineae

Access Academy guidance on recognizing signs of infection by T. indotineae.

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Preventing and treating Trichophyton indotineae

See Academy information on prevention and treatment of T. indotineae.

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Trichophyton mentagrophytes type VII

See Academy guidance on TMVII other emerging dermatophytes of concern.

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Trichophyton rubrum resistant to terbinafine

See Academy resources related to T. rubrum that is resistant to terbinafine.


Treatment pathway


References
  1. Clinical Overview of Ringworm and Fungal Nail Infections. CDC. Updated 2/6/2024. Accessed 6/21/2024, https://www.cdc.gov/ringworm/hcp/clinical-overview/?CDC_AAref_Val=https://www.cdc.gov/fungal/diseases/ringworm/health-professionals.html.

  2. Emerging Ringworm. CDC. Updated 4/24/2024. Accessed 6/21/2024, https://www.cdc.gov/ringworm/hcp/clinician-brief-resistant-infections/?CDC_AAref_Val=https://www.cdc.gov/fungal/diseases/ringworm/dermatophyte-resistance.html.

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