Swollen and itchy labia majora may be caused by improper dressing or allergy, vaginal inflammation and irritation, vestibulitis, etc. It is necessary to check the cause and treat the symptoms. 1. Improper dressing or allergy. Women who wear tight underwear with friction stimulation or chemical fiber underwear, use sanitary napkin allergy, semen allergy and other factors will lead to the labia majora to appear enlarged and itchy symptoms. It is recommended to wear loose, well ventilated cotton underwear, the use of potassium permanganate sitz bath, if it is caused by allergies, you can follow the doctor’s instructions to take loratadine, levocetirizine and other drugs anti-allergy treatment. 2. Vaginal inflammation stimulation. Women suffering from vaginal inflammation will have symptoms of increased leukorrhea, the irritation of inflammatory secretions can also cause labia majora enlargement, itching, as well as local redness, pain and other symptoms. Can be timely laboratory test leukorrhea routine, according to the causative agent symptomatic treatment. For example, bacterial or trichomonas infections are treated with metronidazole and tinidazole as prescribed by the doctor, and vulvovaginal pseudomycetes infections are treated with clotrimazole cream and fluconazole as prescribed by the doctor. 3. Vestibular adenitis. The female vestibular gland is attacked by pathogens, so that the secretions in the vestibular gland can not be discharged or lead to the blockage of the orifice, which will cause inflammation of the vestibular gland, the labia majora is enlarged, pain and itching symptoms. Potassium permanganate can be used for sitz baths, and surgical drainage treatment is recommended as soon as possible. Itchy labia majora should pay attention to hygiene and cleanliness, suspend sexual life, timely examination of the cause of symptomatic treatment.