Itching of the vulva occurs during menstruation, and since there is no way to examine vaginal secretions during menstruation, try to wash it with a gynecological cleansing, disinfectant and antiseptic lotion. You can go to the drugstore to buy lotion, such as red nucleus gynecological cleansing lotion or yellow bitter lotion 1:10 water to wash the vulva, after washing the vulva underwear should be changed as much as possible, sanitary napkins as much as possible to ensure that every four hours to ensure that the change, can avoid the occurrence of vulvar itching. Change the brand of sanitary napkins as much as possible, because when there is an allergy to sanitary napkins, it can also cause persistent itching of the vulva. If you can’t tolerate the itching, you can relieve it with ointments, such as Daktarin ointment or Clindamycin phosphate cream, which can be purchased at the pharmacy and applied to the vulva. The topical medication will not interfere with menstruation and will not affect your health. In 2-3 days after the menstrual period, as far as possible, or to carry out the examination of secretions, according to the situation need to carry on the vaginal plug treatment.