Causes of buns on the vulva include genital herpes, enlarged lymph nodes, condyloma acuminatum, and vestibular cysts. 1. Genital herpes: When the human body is infected with herpes viruses, these viruses can damage the skin of the vulva, which leads to the phenomenon of vaginal pouch. 2. Swollen lymph nodes: when various factors cause inflammation of the lymph nodes in the pubic area, the lymph nodes will become enlarged and the symptom of bag growth will also occur. 3. Condyloma acuminatum: In the case of condyloma acuminatum, this is due to the infection of the human papilloma virus, which damages the skin of the pubic area and triggers the proliferation of tissues, so the bag grows. 4. Vestibular gland cysts: due to a variety of factors lead to the blockage of the vestibular gland, so the formation of cysts, will also appear long bag phenomenon. Finally, if you have a pouch in your pubic area, please go to the hospital for a systematic examination, and follow the doctor’s instructions after clarifying the cause of the disease.