Itching around the vulva and anus is most commonly caused by local skin inflammation, such as due to vitamin B1 deficiency, frequent dampness, or poor local hygiene, which can lead to vulvar eczema and vulvar dermatitis, resulting in local itching. In clinical practice, gynecological examination will reveal local flushing and red papules, which can be treated by applying Pirexone for five days and taking vitamin B1 orally. In addition, due to the inflammation of the vagina, secretions flowing to the vulva and anus can also cause itching, so if necessary, routine tests of the white belt should be done to detect the pathogenic bacteria before giving medication.