A businessman from São Paulo, Brazil contracted a difficult-to-treat fungal skin infection caused by Trichophyton indotineae, which is resistant to the common antifungal drug terbinafine. After terbinafine failed to help over 9 weeks, doctors switched him to itraconazole, which worked well after 8 weeks. Genetic testing showed his fungal strain had a specific resistance mutation and was most similar to a strain from Germany, suggesting he may have caught it while traveling in Europe.