Trichosporon urinary tract infection (UTI) is an unusual emerging infection, caused mostly by Trichosporon asahii, described especially in hospitalized patients. To date the interpretation and management of Trichosporon positive urinary culture remains a diagnostic and therapeutic dilemma for which there are no precise indications, and the challenge can be even more complicated in comorbid frail elderly patients. Triazoles are known to be the most effective antifungal drugs but can raise concerns about pharmacological interaction. We report a case of Trichosporon asahii nosocomial UTI in an elderly patient.