The anatomical and physiological characteristics of the vulva, such as the thin skin and mucous membrane, the undeveloped labia majora and the proximity of the vaginal opening to the anus, as well as bad habits such as wearing diapers for a long time, playing on the floor in open trousers, touching the vulva with dirty hands and wiping the anus from back to front after defecating, lead to the vulva being susceptible to bacterial infections and inflammation and the appearance of red and swollen labia.