If a woman has normal leukorrhea test and no inflammation, but has vulvar itching symptoms, it may be caused by her body’s allergy to underwear, or it may be caused by vulvar hypopigmentation disease or vulvar eczema. 1. Allergy to underwear: If a woman is allergic to underwear, the irritation of the underwear may also lead to the symptoms of vulvar itching. 2. Hypopigmentation of the vulva: If a woman has normal leukorrhea but has symptoms of vulvar itching, she may also have hypopigmentation of the vulva, which usually leads to vulvar itching. 3. Vulvar eczema: women with normal leukorrhea test but with vulvar itching symptoms may also be caused by vulvar eczema, which can be seen as polymorphic lesions on the vulva, such as erythema, papules, herpes and so on. Women with normal leukorrhea test and no inflammation, but the symptoms of vulvar itching may have other reasons, it is recommended to go to the hospital in a timely manner to improve the examination, to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.