A painful and noticeable pimple on the vulva of a girl is considered a boil. Boils are caused by bacterial infections, mainly staphylococcal infections, and are related to poor local hygiene, dampness and sweating, or poor autoimmunity such as high blood sugar. It is recommended to keep the local area dry and clean, you can first give ravnol solution or furacilin solution wet compresses, wet compresses, and then topical 10% ichthyol ointment, fusidic acid ointment or bactrim ointment anti-infection treatment, 2-3 times a day, pay attention to do not pick scratching, extrusion, so as not to spread the infection. If fluctuating sensation occurs, you need to go to the hospital, surgical incision and drainage. If systemic symptoms such as fever occur, oral antibiotic medication is also needed. For recurrent boils, zinc sulfate can be given orally.