There are many types of vaginitis that can be distinguished clinically by the following methods: 1. You can distinguish them by the nature of the leucorrhoea. If the leucorrhoea is milky white and bean curd-like with vulvar and vaginal itching, it is caused by mycosis fungoides; if the leucorrhoea is yellowish or has a snotty color and fishy odor, it is caused by bacterial vaginitis; if the leucorrhoea is yellowish green, foamy or grayish, it is caused by trichomoniasis; 2. If the leukorrhea is yellowish green, foamy or grayish, it is caused by trichomoniasis. 2, laboratory tests can be performed to differentiate the leukorrhea from the vaginal secretions. If the test results reveal Trichomonas, it is a bacterial vaginitis.