Itching of the vulva in teenage girls is mainly seen in two situations: 1. Inflammation of the vulva, girls who do not have sex can also appear inflammation of the vulva, and girls who do not have menstrual periods are more likely to have inflammation of the vulva. Because of the lower hormone levels in women with future menstrual flow, the resistance of the female reproductive tract is relatively low, making it easier to get infected with various bacteria, viruses or microorganisms and develop inflammation. The actual fact is that you can find a lot of people who are not able to get a good deal on this kind of things. 2, allergy caused by vulvar itching, mostly occurs after using a new brand of toilet paper, sanitary napkins or new change of underwear, most of them are contact allergies. You need to remove the allergens and then use dexamethasone ointment topical topical application, it can be a good treatment.