Trichomonas vaginitis is an infection acquired through sex that is associated with vaginal discharge.[21] It can be transmitted by way of the penis to the vagina, the vagina to the penis, or from vagina to vagina.[25] The discharge in Trichomonas is typically yellowish-green in color.[21] It sometimes is frothy and can have a foul smell.[26] Other symptoms may include vaginal burning or itching, pain with urination, or pain with sexual intercourse.[25] Trichomonas is diagnosed by looking at a sample of discharge under the microscope showing trichomonads moving on the slide.[21] However, in women with trichomonas the organism is typically detected in only 60-80% of cases.[21] Other testing, including a culture of the discharge or a PCR assay, are more likely to detect the organism.[21] Treatment is with a one time dose of oral antibiotics, most commonly metronidazole or tindazole.[21]