If there is contact dermatitis of the vulva, the following symptoms will be manifested: 1) localized itching, redness and swelling of the vulva. 2) localized redness and swelling of the vulva with a particularly distinct boundary, which is caused by the inflammatory reaction of the skin after contact, while the skin that has not been in contact does not have an inflammatory reaction. 3) localized redness and swelling of the vulva, which is caused by the inflammatory reaction of the skin after contact. 4) localized redness and swelling of the vulva. When contact dermatitis occurs, it is recommended that the cause be removed. If contact dermatitis is caused by underwear or sanitary napkins, it is recommended to change to another brand of sanitary napkin as soon as possible, and then to change to other underwear to avoid the occurrence of contact dermatitis. If contact dermatitis occurs, it is recommended to actively give anti-inflammatory treatment, for example, you can apply topical mometasone ointment for treatment, the vast majority of patients will be significantly relieved in 3-5 days.