Trichophyton indotineae (previously known as Trichophyton mentagrophytes genotype type VIII) is a terbinafine-resistant tinea that has emerged in South Asia and has been reported in India, Europe, North America, South America, and Africa, including 2 cases in New York City with no history of recent international travel. Cases have been reported across the United States, most associated with travel to the Indian subcontinent.

Spread is from person to person, and this species is more easily spread within families. Cases of possible spread through sexual contact have been reported.

Cutaneous involvement is commonly extensive, and atypical presentations are common. Relapses are also common. The associated pruritus and atypical presentation lead to misdiagnosis and prescribing topical steroids, which further confound diagnosis and treatment.

Related topics: tinea corporis, tinea cruris, tinea faciei