What causes excessive leucorrhea in 13 year old girls? In fact, most 13-year-old girls with leucorrhea are mainly related to local inflammation of the vulva and vagina. The pathogens that cause these local inflammations can be mold or bacteria, or they can be trichomonas or other related pathogens. Vulvovaginitis in girls is often caused by direct or indirect transmission, for example, the child may not be particularly hygienic after defecating, and indirect contact with the child’s underwear or bath or toilet may cause inflammation of the vulva and vagina, which often results in increased discharge. Some children may have localized redness and swelling of the labia of the vulva. In severe cases, children may have significant itching and pain, or even scratching because of itchiness, resulting in localized skin breakage or congestion. At this time, it is best to take the child to a specialized pediatric obstetrics and gynecology department for a relevant examination to confirm the pathogen causing the child’s possible local inflammation before doing the relevant treatment. In addition, you should pay attention to local vulva care, keep clean, change underwear regularly, pay attention to wear cotton underwear, etc. can help to relieve local symptoms.