Trichomonas vaginalis is the only protozoan with one stage in its life cycle ie., Trophozoite form .
It is an obligare parasite and cannot live without close association with vaginal urethral or prostatic tissues.
The common presentation of trichomoniasis is foul smelling frothy vagnial discharge,itching and dysuria
The gold standard for diagnosis is culture on CPLM or PEM .
The treatment of choice is metronidazole