If the leukorrhea is foamy, the most common cause is caused by trichomonas infection. Not only is the leukorrhea foamy, but it also causes itching of the vulva, extra vaginal discharge and congestion and edema of the vaginal mucosa, and some people may find bloody discharge in the discharge. It is advisable to have a routine clinical examination of the leucorrhoea. If the infection is trichomonas, it can be treated with metronidazole by inserting a local metronidazole plug once a day, one capsule at a time, for 7 days. You can also take oral metronidazole tablets for 5 days. Since trichomoniasis can be transmitted to partners through sexual contact, you should not have sexual intercourse until the laboratory test is negative.