Suddenly itchy vulva and then swollen what happened

The vulva suddenly itches and then swells, the most common reason is bacterial infection, especially during menstruation, menstruation in sanitary napkins above easy to breed bacteria, if not frequently changed sanitary napkins, these bacteria will cause environmental impact, showing local congestion, edema and accompanied by pain symptoms. Other reasons are resistance decline, local resistance will also decline. For example, often stay up late, nervous, or take some immunosuppressive drugs. Sometimes in the case of diabetes, it will also show symptoms of vulva pain and redness, so it is necessary to keep local cleanliness after it occurs.