A young woman presents with vaginal itching and irritation of recent onset. Her labia are swollen, and she has a frothy yellowish discharge with an unpleasant smell and a pH of 6.8. She has been celibate during the last 6 months and has been taking antibiotics for a throat infection. Which medication is most likely to clear her symptoms?
A) Azithromycin
B) Valacyclovir
C) Penicillin
D) Metronidazole

Question

Quizplus · Accepted Answer

The character of the discharge, lack of recent sexual activity, and current antibiotic treatment point to infection with Trichomonas vaginalis, which can exist asymptomatically and flare up only if conditions such as an imbalance in normal vaginal flora resulting from antibiotic treatment enable the protozoan to proliferate. Patients with trichomoniasis respond well to treatment with metronidazole.

A Young Woman Presents with Vaginal Itching and Irritation of Recent