Itchy vaginal night causes are as follows: 1, may be caused by pinworm infection, this situation is mostly seen in young girls, with itching around the anus and vulva; 2, vaginal inflammation caused by vaginal inflammation, women with vaginal inflammation vaginal discharge is more, local stimulation will appear vulvar itching, seen in mycotic vaginitis, trichomonas vaginitis, bacterial vaginitis, etc.; 3, if the patient does not pay attention to the cleanliness and hygiene of the vulva, wear If the patient does not pay attention to the cleanliness of the vulva, wear tight and chemical fiber clothes and pants, and the clothes and pants are not breathable, vulvar itching will also occur in this case; 4. If the woman is allergic to clothes, or allergic to condoms, female lotions, etc., vulvar itching will also occur.