Itching and redness of the vaginal opening may be due to vulvovaginal pseudomycosis, trichomonas vaginitis, atrophic vaginitis, and so on. Women with itchy, red and swollen vaginal opening need to go to the hospital for a routine test of the leukorrhea because it is possible that they are suffering from vaginitis. 1. Vulvovaginal pseudomycosis, which is a common cause of female vulvovaginal itching, the typical symptoms are vulvovaginal itching, burning pain in the vulva, pain during sexual intercourse and pain during urination, and a significant increase in the vaginal discharge, which is tofu-dregs-like or curd-like. 2. Trichomonas vaginitis, Trichomonas vaginitis is a common vaginal inflammation caused by Trichomonas vaginalis and is also a sexually transmitted disease. When there is trichomonas vaginitis, the patient will have obvious vulvar itching, vulvar burning pain, pain during sexual intercourse and other symptoms, and the secretion is thin purulent, foamy, and has a bad odor. 3. Atrophic vaginitis, caused by the decrease of estrogen level, is a vaginal inflammation mainly caused by aerobic bacterial infection, which is mainly seen in natural menopausal or artificially postmenopausal women. Typical symptoms are burning discomfort of the vulva, itching, pain during sexual intercourse, thin yellowish discharge, and pus and blood discharge may occur in severe infections.