Acne on the back of the neck may be caused by acne, folliculitis, skin warts, etc. It is mainly improved or eliminated through general treatment, medication and physical therapy. 1. Acne: pay attention to skin cleaning, local application of benzoyl peroxide, retinoic acid cream and other drugs, if accompanied by obvious inflammatory reaction, local use of fusidic acid cream, mupirocin cream and other antibiotic ointment, but also fruit acid peeling, laser and other treatments and other methods. 2. Folliculitis: mainly caused by bacterial infection, can be applied locally antibiotic ointment, such as fusidic acid ointment, mupirocin ointment, and with local hot compresses, can promote swelling. 3. Skin warts: Skin diseases caused by infection with the human papilloma virus often require physical methods such as laser or freezing to remove warts. The above medications should be used under the guidance of a doctor, do not use your own medicine. It is recommended that you go to the hospital in time to find out the cause of the problem and follow the doctor’s instructions to standardize the treatment.