The most common and important cause of vaginal pain is vaginitis, because when the vagina is inflamed, the mucous membrane of the vaginal skin bleeds and becomes edematous, and the inflammatory exudate can also stimulate the vaginal nerves, causing vaginal pain. 2. Foreign bodies inside the vagina are becoming more common, such as vaginal polyps, vaginal pseudotumors and vaginal cysts, which can also cause vaginal pain. These substances can compress the vaginal vascular nerves, which can impair blood circulation and stimulate the nerves to produce vaginal pain. 3. Because of neurogenic vaginal pain, some women may have sensitive sensory nerves located in the vagina, which can cause a strong reaction to the slightest external stimulation.