Itching in the area where little girls urinate is usually referred to as perineal itching. Perineal itching has many causes, the most common is not pay attention to hygiene, resulting in local infection caused by itching. Because of the moist perineum, and urine, feces, sweat infiltration, easy to lead to local skin chronic inflammatory reaction, and may be combined with bacterial infection. Generally strengthen the cleaning of the vulva, topical antibiotics can get effective relief. Some patients may have some allergic reaction to the underwear or drugs they wear, which may also lead to perineal itching. You can also see local infections, such as Trichomonas vaginalis or fungal infections, may also lead to vulvar itching, generally this infection can also appear local secretion increase, vulvar redness, swelling, pain and other symptoms, you can apply metronidazole or antifungal drugs for symptomatic treatment.