If the vulva has been itching after the menstrual period is clean, clinically it may be caused by the following reasons: First, sanitary napkin allergy, when the sanitary napkin allergy will appear in the vulva localized redness and swelling phenomenon, and the localization will appear obvious itching, often contact dermatitis caused by the application of parempan, mometasone ointment or dermatophyte, can be effective in treating sanitary napkin allergy. The phenomenon of tampon allergy can be effectively treated. Secondly, due to the time of menstruation did not strengthen the vulva local care, caused the inflammatory reaction, so it will lead to local itching. It is best to go to the hospital to do the examination, take the vaginal secretion to do the routine examination of the leukorrhea, according to the results of the corresponding treatment should be given. Third, it may be caused by pubic lice, there are parasites on the pubic hair, through gynecological examination can clearly understand whether this disease, and then give treatment. So there are more reasons for localized itching of the vulva, and only by identifying the causes can specific medication be given.