Vulvar redness and swelling may be inflammation, vaginal allergy, etc., manifested as vulvar itching, redness, swelling, pain, burning sensation, leukorrhea with excessive pus and so on. 1. If it is caused by inflammation, such as bacterial vaginitis, mycobacterial vaginitis, trichomonas vaginitis, etc., which is common in women with too tight clothes or wearing chemical fiber underwear, the main symptoms are vulvar itching, vulvar redness, swelling, discomfort, pain and even burning sensation, leukorrhea with a lot of pus, and prolonged scratching of the vulva caused by erythroplasia. 2. If it is vaginal allergy, such as sanitary napkin allergy during menstruation, there will be vaginal itching, redness, swelling and pain, at this time, you need to change the brand of sanitary napkin, and avoid rinsing the vulva with irritating douche. If the above symptoms occur, you need to consult a doctor in time, and do a pathogenetic examination of vaginal or cervical secretions, symptomatic treatment of the cause. It is recommended to consult a doctor to identify the cause of the disease and to carry out targeted treatment.