MRCEM Notes

<i>Trichomonas vaginalis</i>

Trichomonas vaginalis is a highly motile, flagellated protozoan parasite

Features
  • vaginal discharge: offensive, yellow/green, frothy
  • vulvovaginitis
  • strawberry cervix
  • pH > 4.5
  • in men is usually asymptomatic but may cause urethritis

Investigation
  • microscopy of a wet mount shows motile trophozoites

Management
  • oral metronidazole for 5-7 days, although the BNF also supports the use of a one-off dose of 2g metronidazole

Comparison of bacterial vaginosis and Trichomonas vaginalis

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