Trichomonal vaginitis, due to varying degrees of onset, presents with different symptoms. The following sections introduce the acute, chronic, and asymptomatic infections of trichomonal vaginitis.
1. Acute infection: Manifested as a diffuse vulvovaginitis. The most common symptoms include increased vaginal discharge, vulvar irritation and itching, dysuria, or an unpleasant odor. Severe cases may present with lower abdominal pain. During the acute phase, there is a large amount of leukorrhea, which may soak through the patient's underwear, often requiring the use of sanitary napkins.
The external genitalia appear red and swollen, the vagina is congested, and there is an increase in vaginal discharge, varying from slight and thin to large and thick. 10% to 30% of female patients exhibit typical copious foamy yellow-green discharge, often with an unpleasant odor. The cervix is congested and swollen, with widespread erosion of the cervical epithelium and pinpoint bleeding, known as strawberry cervix, although this sign is less common.
2. Chronic infection: If the acute infection is not treated in time, it may turn into chronic infection. At this time, the vaginal discharge will be less than that during acute infection, mostly grayish white milky, still with an odor, and urinary tract infection may occur with symptoms such as frequent urination, urgency, and dysuria.
During gynecological examination, the vulvar and vaginal mucosa is pale red or slightly congested, and there is a grayish white milky foam-like vaginal discharge accumulated in the posterior fornix, with an odor. This period is of great importance in epidemiology and is the main period of transmission.
3. Asymptomatic infection: 10% to 50% of female infected individuals may have no clinical symptoms, but 50% of asymptomatic carriers may develop symptoms within half a year.