2. Trichomonal urethritis, cystitis and pyelonephritis can be complicated;

3, because trichomonas can devour sperm, it can cause infertility and affect the quality of life;

4. Trichomonas vaginalis exists in vagina for a long time, consuming or devouring glycogen in vaginal epithelial cells, hindering the production of lactic acid, not only destroying the weak acidic environment of vagina, but also causing abnormal development of vaginal cells and inducing precancerous lesions.

Trichomonal vaginitis is caused by external infection. The reason why an infectious disease can spread must meet three conditions: the source of infection, the route of transmission and the susceptible person.

For trichomoniasis, anyone can be infected, and people with altered vaginal pH or low immunity are more likely to be infected. Few patients can heal themselves after being infected with trichomonas, and even if they are cured, they may be infected again next time. The source of trichomoniasis infection is people who carry insects and pollutants.

As for the route of transmission, there is direct transmission, that is, sexual transmission and indirect transmission. In foreign countries, vaginal trichomoniasis is mainly transmitted through sexual life, so it is classified as a sexually transmitted disease. In China, the mode of transmission is different. Because our country has a large population and public health facilities are relatively backward in developed countries, the communication in public places has also become an important way of communication. For example, a chair in a public bathhouse or a toilet in a public toilet is polluted by the secretion of an infected person, so a latecomer sitting directly on the chair or toilet may be infected. The spread of trichomonas may be caused by pots and pools in public baths, swimming pools with high density and poor disinfection in summer, borrowing other people's underwear and renting swimsuits.

In addition, family members sharing baths and iatrogenic cross-infection are also the reasons for indirect transmission of trichomonas.

Gynecologists suggest that the pathogen of this disease is Trichomonas vaginalis. Trichomonas is a parasite, but it is invisible to the naked eye. This trichomonas is pear-shaped, with a length of 10-30μ m, and its head has four flagella as long as worms. This kind of trichomonas can be clearly seen under the microscope. Trichomonas has strong adaptability to different environments and can grow and reproduce at 25℃-42℃. It can survive for 265,438+0 days at 3℃-5℃, 20-60 minutes at 46℃ and several hours after leaving the human body. Trichomonas not only parasitizes in the anoxic vagina, but also invades urethra and paraurethral glands, even up to ureter and renal pelvis. The optimum pH value for trichomonas growth is 5.5 ~ 6. If the pH value is lower than 5 or higher than 7.5, the growth of trichomonas will be inhibited.