Scratching unconsciously at night indicates that there is perineal itching, and the cause of perineal itching should be analyzed and treated. The most common is vulvovaginitis, to do gynecological examination, take the vaginal secretion to send test, clear whether there is vaginitis, and according to the specific type of vaginitis to give treatment. Vulvar itching is most commonly associated with mycosis fungoides, which is caused by a large number of mold infections in the vagina, and is usually treated with antifungal medication. Vulvovaginal itching is also sometimes associated with allergies, and is usually treated with localized anti-allergy medications, or oral anti-allergy medications in severe cases. Vulvar itching is also sometimes associated with immune abnormalities, such as vulvar leukoplakia, and is usually treated with localized immunosuppressive drugs.