Judging whether it is yeast or trichomoniasis based solely on vulvular itching is very difficult. Whether it is yeast, trichomoniasis, or even bacterial vaginitis, all can cause vulvar itching. In addition, simple vulvitis can also lead to symptoms of vulvar itching. Of course, the itching symptoms caused by yeast vaginitis among these diseases are usually the most severe. However, there are also some symptoms that are not especially severe. Thus, it is very difficult to distinguish the specific disease based solely on the symptom of vulvar itching. When this situation arises, it is advisable to visit a hospital for an examination, including an examination of the secretions, which may be able to definitively determine whether the cause is yeast, trichomoniasis, bacteria, or simply vulvitis, or even possibly some pathological changes in the vulvar skin.