Pimples on the back of the head may be caused by folliculitis, acne, sebaceous adenoma and other diseases, patients can take medication, surgical treatment, physical therapy. 1. Folliculitis:Patients with folliculitis will have pustules, itching and other symptoms, which will lead to acne on the back of the head. Patients can follow the doctor’s instructions to use chlorhexidine acetate solution, povidone-iodine solution and other antibacterial lotions, can also use mupirocin ointment, fusidic acid cream and other antibiotic ointment. If the condition is serious, patients can take incision and drainage of the lesion surgical treatment. 2. Acne: The main symptoms of acne are pimples, pustules, cysts and so on, which will lead to the manifestation of acne in the back of the head. Patients can use antibiotic ointment such as erythromycin ointment, fusidic acid ointment, or retinoic acid ointment as prescribed by the doctor. If necessary, physical therapy, such as photodynamic therapy, laser therapy. 3. Sebaceous adenoma: patients with sebaceous adenoma will have skin color or yellowish nodules and papules, so patients will have the performance of acne on the back of the head, the treatment is mainly based on surgery and physical therapy, can be used electrocautery, frozen or surgical excision. The scope of excision is appropriately enlarged to minimize recurrence. Patients with symptoms of acne on the back of the head, should consult a doctor to check the cause of the disease, and follow the doctor’s instructions for treatment.