Question
| A. |
Bacterial vaginosis |
| B. |
Chlamydia trachomatis |
| C. |
Trichomonas vaginalis |
| D. |
Neisseria gonorrhea |
|
Correct Answer » A Explanation |
 |
Bacterial vaginosis (BV) is the most common cause of malodorous (fishy) vaginal discharge. It results from replacement of normal Lactobacillus flora by anaerobic bacteria, especially Gardnerella vaginalis. The discharge is thin, homogeneous, grayish-white, with a fishy odor (positive Whiff test), and is usually not associated with significant vulval itching or inflammation.
Explanation of Each Option
A. Bacterial vaginosis – Correct. Characterized by thin gray-white, fishy-smelling discharge, vaginal pH > 4.5, positive Whiff test, and clue cells on wet mount.
B. Chlamydia trachomatis – Incorrect. Causes mucopurulent cervicitis; discharge is not typically foul-smelling.
C. Trichomonas vaginalis – Incorrect. Causes frothy yellow-green discharge, strawberry cervix, and motile trichomonads on wet mount. Odor may be present but the classic fishy odor is seen in BV.
D. Neisseria gonorrhoeae – Incorrect. Causes mucopurulent cervicitis and pelvic inflammatory disease; discharge is purulent rather than characteristically malodorous.
