Vaginal itching is mostly caused by vaginitis, with trichomonal vaginitis and candidal vaginitis causing noticeable symptoms. It is best to visit a hospital to test vaginal discharge and determine the infectious pathogen before medicating. Candidal vaginitis can be treated with clotrimazole vaginal tablets, miconazole suppositories, and oral fluconazole and itraconazole, which are all very effective. For trichomonal vaginitis, oral treatment with metronidazole or tinidazole can be used, and metronidazole can also be placed inside the vagina. These medications should be used under the guidance of a doctor.