A small pimple on the vaginal opening may be caused by inflammation of the vulva, or it may be a boil or carbuncle similar to folliculitis. If there is no significant reduction in size after medication, regular observation is needed, and if it gradually increases, you need to go to the hospital and have it surgically removed if necessary to cure it. Women also need to wash their vulva with water every day, keep it clean and dry, and wear air-permeable underwear to avoid inflammation. If a woman has more vaginal discharge, yellow, yellow-green or white curd, this is a sign of vaginitis. The discharge stimulates the vulva and can lead to bumps on the vulva, so it is necessary to treat the vaginitis. There are several types of vaginitis, so you need to test the discharge to determine which type of vaginitis it is and choose the right medication to cure it.