UKHSA briefing: Increasing detection of antifungal resistant Trichophyton indotineae in England
Infections with terbinafine-resistant Trichophyton indotineae (T. indotineae), a dermatophyte fungus, are emerging and being increasingly detected in the UK. T. indotineae accounted for 40% of dermatophyte isolates referred to the UKHSA Mycology Reference Laboratory (MRL) in 2024.
UKHSA recommends that in cases of tinea corporis, specifically fungal infections of the groin, buttocks and thighs, T. indotineae should be suspected especially in patients with links to South Asia or where there is treatment failure with terbinafine. Any isolates from such patients should be referred to the Mycology Reference Laboratory3 for confirmation of identification if referring centres are not confident in their ability to identify this organism to species level.