Long bumps at the pubic hair may be the manifestation of folliculitis, may also be caused by scabies, need to be specifically analyzed. 1. Folliculitis: private parts do not pay attention to hygiene, hair pulling, scratching and so on lead to skin damage to the skin at the pubic hair, skin impregnation, blind use of hormonal drugs and so on will lead to the production of folliculitis, the patient localized redness and swelling symptoms, and accompanied by a sense of pain. In normal times to keep the local clean and dry, light diet, drink more water. 2. Scabies: Scabies is a contagious skin disease caused by scabies mites parasitizing the skin. The lesions are mostly symmetrical, manifested as papules, papules and tunnels, the papules are about the size of a small grain of rice. Patients should pay attention to personal hygiene, once diagnosed should be immediately isolated, and boiling sterilization of clothing and bedding, can be treated with topical sulfur ointment. There may be other causes of pimples at the pubic hair, do not blindly take medication on your own, you need to go to the hospital in time.