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Bacterial vaginosis — USMLE Step 3 MCQ

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EasyOB/GYN (prenatal care, contraception, screening)Bacterial vaginosisUSMLE Step 3

A 27-year-old woman has thin gray vaginal discharge and fishy odor after intercourse. She has no pelvic pain or fever. Vaginal pH is 5.5, whiff test is positive, and microscopy shows clue cells. Which of the following is the most likely diagnosis?

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Correct answer: EBacterial vaginosis

Thin discharge, elevated pH, positive whiff test, and clue cells indicate bacterial vaginosis.

Reference: CDC Sexually Transmitted Infections Treatment Guidelines