There is no medical term for Trichomonas vaginalis, it should be Trichomonas vaginalis. Trichomonas vaginalis is an inflammation of the vagina caused by Trichomonas vaginalis infection, which is one of the common vaginal inflammatory diseases in women and is mainly transmitted directly through sexual contact. Trichomonas vaginalis has an incubation period of 4-28 days, so 25-50% of patients are asymptomatic at the beginning of the infection. Those who develop symptoms show the following: 1. Increased vaginal discharge: As the infection lengthens, the patient will experience increased vaginal discharge. The vaginal discharge has certain characteristics and is thin, purulent, foamy, odorous and grayish yellow or yellowish white in color; if it is combined with other infections, the color may be yellowish green. 2. Vulvovaginal itching: Itching is common in the vulva and vaginal opening area, and some patients may have scratch marks. 3. Other symptoms: If the symptoms are severe, there will be burning and pain in the vulva or vagina, and painful intercourse. 4. Combined urinary tract infection: Trichomonas vaginalis can not only infect the vulva and vagina, but also continue to infect the urethra, bladder and even kidneys if left untreated. If the infection continues to worsen and is combined with urinary tract infection, frequent urination, urgent urination, painful urination, sometimes hematuria and even fever can be seen. 5. Infertility and pregnancy-related diseases: Trichomonas vaginalis can swallow sperm and cause infertility if left untreated; for pregnant patients, it can increase the risk of premature rupture of fetal membranes and preterm delivery. Therefore, when symptoms such as increased vaginal discharge, itching, burning, pain and painful intercourse at the vulva or vaginal opening occur, you need to be alert to trichomoniasis and seek medical attention promptly.