There are more clinical causes of itching outside the vagina, including pruritus, vulvar skin inflammation, and vaginitis: 1. Pruritus: often caused by dry skin, medication and clothing stimulation, lifestyle habits, living environment, and mental factors. The itching is characterized by paroxysms and worsens at night, and can be gradually relieved after the triggers are removed. 2. Skin inflammation: often caused by poorly ventilated underwear or lack of attention to daily hygiene, resulting in inflammation of the vulvar skin, causing local eczema and vulvar itching, which can be relieved by changing cotton breathable underwear and washing the vulva daily. 3. Vaginitis: including Candida vaginitis, trichomonas vaginitis, mycotic vaginitis, bacterial vaginitis and mycoplasma vaginitis, which can show obvious itching symptoms accompanied by increased vaginal discharge. Symptoms such as abnormal color and odor. It is necessary to clarify the pathogens according to the routine laboratory results of the leucorrhea and apply targeted drugs for treatment under the guidance of the doctor.