If a woman has a painful vulva pimple, it may be caused by an acute inflammation of the vulva, mainly caused by a boil on the vulva. It can be treated by washing the vulva with 30% cleanser or twin ginseng lotion and applying Bactrim or erythromycin ointment locally. It is recommended to wear loose outer pants and underwear to avoid aggravating the local pain caused by friction. Women should keep their vulva clean and not wear tight-fitting pants in daily life to ensure good local ventilation and reduce inflammation formation. If local medication is not effective, you can take oral antibiotics for 2-3 days will achieve better results.