Trichomonas vaginitis is caused by the infection of Trichomonas vaginalis in the vagina, where it normally should not be present, indicating it is an infectious disease. For most patients with trichomonas vaginitis, the symptom of itching is not very noticeable. Moreover, there is no clear correlation between the degree of itching and the severity of the disease, so the presence or intensity of itching should not be used to determine whether the condition is mild or severe. As an infectious disease, the presence of this condition indicates an infection, namely the presence of Trichomonas vaginalis. Therefore, once diagnosed, it is recommended to seek timely treatment. Delayed treatment may increase the risk of ascending infections such as pelvic inflammatory disease or urinary system infections.