Acne on the back of the neck is usually referred to as acne, which can be treated by medication, and at the same time, attention should be paid to good personal hygiene and cleanliness. 1. medication: oral minocycline and other drugs can be prescribed to treat inflammatory acne, at the same time can be applied externally, such as benzoyl peroxide gel, etc., the specific method of medication can be consulted with the doctor, do not blindly use their own medication. 2. Do a good job of personal hygiene and cleanliness: pay attention to strengthen the local cleaning, you can use facial cleanser for the neck and face cleaning, keep the neck area clean and tidy, to reduce the emergence of infection and other situations. The factors that cause acne behind the neck are relatively complex, it is recommended that the treatment under the guidance of a physician, usually pay attention to personal hygiene and cleanliness and dietary structure adjustment, to avoid aggravation of the condition.