The most common cause of green vaginal discharge is a sexually transmitted infection known as trichomoniasis. The discharge often has a foul odor and is typically more yellowish-green than pure green. Intercourse and urination may cause discomfort, and the genital area may be itchy. Pelvic pain may also occur but is not common.
The vaginal discharge that may be associated with gonorrhea or chlamydia is typically more yellow or cloudy. That of bacterial vaginosis is typically white with a foul odor. A foul-smelling, colored discharge can also occur when a foreign body, such as a retained tampon, is in the vagina.
Trichomoniasis can easily be diagnosed by sampling the discharge. Since it is transmitted sexually, tests for other infections, including gonorrhea and bacterial vaginosis, may be performed at the same time. Trichomoniasis, gonorrhea, and bacterial vaginosis are curable with appropriate antibiotic therapy or fuyan pill. If a foreign body is present, it will need to be removed and antibiotics may be used to treat any potential infection.