After menstruation below the itchy this symptom is more common, the cause of which can only be determined after the doctor’s examination, the specific reasons are as follows: 1, some women will be allergic to sanitary pads, or the use of unclean sanitary pads, that is, has passed the shelf-life or put in the home for a long time, will also feel itchy down there; 2, menstrual blood is the best culture medium for bacteria, part of the women to menstruation process, has been very Taboo cleaning vulva, bathing, a week often pad pads in the case of a more humid, stuffy environment, she will feel itchy down there after menstruation; 3, changes in vaginal flora and changes in vaginal pH: menstruation is prone to Candida vaginitis or bacterial vaginitis, so itchy after menstruation. At this time, you can do the test of leukorrhea, and if there are these bacterial infections, then appropriate treatment can improve the symptoms; 4, menstruation and postpartum need to prohibit sexual intercourse, and coitus during menstruation can also be infected with bacteria, which can cause vulvar itching after menstruation.