Repeated swelling of the labia minora may be caused by diseases such as vestibular cysts, vulvodynia, and vulvar eczema. 1. Vestibular cysts: Vestibular cysts are caused by chronic inflammation, congenital narrowing of the gland ducts or injury. Patients will experience symptoms such as vulvar swelling, discomfort during sexual intercourse, abnormal vaginal discharge, and also recurrent swelling of the labia minora. 2. Vulvovaginitis: Vulvovaginitis is caused by pathogen infection or other factors, and the main symptoms of patients are swelling, itching, pain and burning sensation of vulvar skin and mucous membrane. As a result, patients will show recurrent swelling of the labia minora. 3. Vulvar eczema: vulvar eczema is considered to be caused by chronic infection, endocrine diseases, metabolic disorders and other factors. Patients mainly manifest vulvar itching, skin redness, swelling, etc., so patients will have symptoms of recurrent swelling of labia minora. When patients have symptoms of recurrent swelling of labia minora, they should seek medical treatment in time to identify the cause of the disease and treat under the guidance of doctors. Patients should pay attention to personal hygiene and keep the pubic area clean.