🦠 Chapter 330 · Trichomoniasis (Trichomonas vaginalis)

Nelson Textbook of Pediatrics 22nd Edition | Trichomonas vaginalis is a flagellated protozoan and the most common non-viral sexually transmitted infection worldwide. In females: frothy, malodorous vaginal discharge, vulvovaginal irritation, dysuria, "strawberry cervix." In males: usually asymptomatic, may cause urethritis. Diagnosis: wet mount microscopy (motile trichomonads), NAAT (most sensitive). Treatment: metronidazole or tinidazole (single 2g dose or 7-day course). Treat sexual partners simultaneously to prevent reinfection. Trichomoniasis increases risk of HIV acquisition and transmission, and adverse pregnancy outcomes.