America, and STD clinics in the UK often try courses of antifungal therapy (e.g., oral fluconazole
). However, I have seen no objective evidence in support. As you know, yeasts are sufficiently ubiquitious that isolation from the genital tract says little or nothing about pathogenesis.
Perhaps most important for your friend, there is no evidence that any harm every comes; for example, no known association with later urethral stricture, impaired fertility, or any other serious outcome.