The back of the baby’s head under the scalp with a sliding bag may be and sebaceous adenoma, lymph nodes and other reasons, generally do not need special treatment, if necessary, need to clarify the cause of the use of medication, etc., specific as follows: 1. sebaceous adenoma: the baby’s back of the head under the scalp there may be a sliding bag and sebaceous adenoma related, usually the baby does not have obvious discomfort, generally do not do special treatment, can be continued to observe. 2. lymph nodes: if the lymph nodes caused by the baby’s back of the head under the scalp can be a sliding bag, if there is no pain, fever and other acute infection phenomena, generally do not need to deal with, if there is fever and lymph node pain and enlargement of the symptoms, it is recommended to go to the hospital in a timely manner to check the doctor’s guidance to take drugs such as cefaclor treatment. The back of the baby’s head there is a sliding bag under the scalp may have other reasons, such as subcutaneous cysts, etc., it is recommended to go to the hospital in a timely manner to check, clarify the cause of the disease, and then give treatment.