Foul-smelling vaginal discharge without pruritus or dyspareunia is most characteristic of which infection?

Foul-smelling vaginal discharge without pruritus or dyspareunia is most characteristic of which infection?

• A. Bacterial vaginosis
• B. Trichomonas vaginalis infection
• C. Candidal vaginitis
• D. Gonorrhea

Answer: (A)

Foul-smelling vaginal discharge without itching or pain points to a disruption of normal vaginal flora with overgrowth of anaerobes, not an inflammatory or fungal infection. Bacterial vaginosis fits this pattern: the discharge is often thin and gray with a characteristic fishy odor, and most patients do not experience pruritus or dyspareunia. Diagnostic clues include a vaginal pH above 4.5 and a positive whiff test, with clue cells seen on microscopy. By contrast, candidal vaginitis usually brings intense itching and thick, cottage-cheese discharge; trichomonas often causes itching with a frothy, yellow-green discharge; gonorrhea tends to present with a purulent cervicitis rather than a foul-smelling discharge alone. So the feature of a fishy odor without itching most strongly indicates bacterial vaginosis.

Foul-smelling vaginal discharge without itching or pain points to a disruption of normal vaginal flora with overgrowth of anaerobes, not an inflammatory or fungal infection. Bacterial vaginosis fits this pattern: the discharge is often thin and gray with a characteristic fishy odor, and most patients do not experience pruritus or dyspareunia. Diagnostic clues include a vaginal pH above 4.5 and a positive whiff test, with clue cells seen on microscopy. By contrast, candidal vaginitis usually brings intense itching and thick, cottage-cheese discharge; trichomonas often causes itching with a frothy, yellow-green discharge; gonorrhea tends to present with a purulent cervicitis rather than a foul-smelling discharge alone. So the feature of a fishy odor without itching most strongly indicates bacterial vaginosis.