A pimple growing on the pubic area of a girl may be caused by folliculitis, boils, vestibular cysts and other diseases. 1. Folliculitis: Folliculitis is caused by fungal and bacterial infections and other factors, and the patient develops red pimples and pustules in the pubic area, which manifests as a pimple on the pubic area. 2. Boils: Boils are mainly caused by Staphylococcus aureus infection or considered to be triggered by scratching the skin, poor hygiene habits, alcoholism, low immunity and other factors. Symptoms are small red nodules, with the development of the disease can be solid nodules, the patient may appear to have a pimple on the pubic area. 3. Vestibular cysts: Vestibular cysts may be caused by congenital narrowing of the gland ducts, trauma, inflammation and other factors resulting in gland duct blockage. The patient can appear in the skin cysts, pain and other symptoms, can be manifested as a pimple in the pubic area. There are many reasons why a girl may have a pimple on her pubic area, and it is recommended that the patient identify the cause of the problem in a timely manner and actively take relevant treatment measures to avoid delaying the condition.