Trichomonas Vaginalis: Causes, Symptoms, and Treatment

What is the presence of active motile multi-flagellated trophozoites in vaginal or urethral secretion indicative of?

a. Bacterial infection

b. Fungal infection

c. Protozoal infection

d. Viral infection

Answer:

The correct answer is Trichomonas vaginalis.

Introduction to Trichomonas Vaginalis

Trichomonas vaginalis is a protozoan parasite that causes the infection known as trichomoniasis. This parasitic infection is commonly transmitted through sexual contact and affects the urogenital tract in both women and men.

Symptoms of Trichomoniasis

Women with trichomoniasis may experience symptoms such as vaginitis, which includes tiny hemorrhagic lesions, foul-smelling discharge, frequent urination, and painful urination. On the other hand, men infected with Trichomonas vaginalis typically do not show any symptoms.

Morphology of Trichomonas Vaginalis

Trichomonas vaginalis trophozoites are shaped organisms ranging from 7 to 23 micrometers in size. They possess five flagella in the anterior region, with the fifth flagellum extending along the membrane's outer edge. Additionally, the organism has an axostyle—a thin rod projecting posteriorly through the body's length.

Life Cycle of Trichomonas Vaginalis

The trophozoite stage is the only form of Trichomonas vaginalis, and it reproduces through binary fission in the urogenital tract. This delicate trophozoite is commonly transmitted from one individual to another through sexual activities.