The enlarged lymph nodes behind the baby’s occiput are mostly caused by inflammatory stimulation of the neighboring organs. The possibility of respiratory tract infection is very high, and the enlarged lymph nodes behind the ear may appear if the child has a cold, fever, cough or pain in the gums or teeth, which are caused by inflammatory stimulation. Inflammatory stimulation, especially chronic inflammation, can lead to enlargement of the lymph nodes. After the infection is controlled, the lymph nodes will shrink accordingly, but it is impossible for them to disappear completely. The child should use anti-inflammatory drugs to control the infection, especially if it is caused by bacterial infection, antibiotics are definitely needed to control the infection, and some local Chinese herbal medicines can be applied externally or local hot compresses can also be used, which can significantly reduce the degree of lymph node enlargement. Of course, if the lymph nodes increase significantly within a short period of time, and the enlarged area is larger, it is necessary to go to the hospital for further examination, and blood sampling and ultrasound examination are needed to clarify the nature of the enlarged lymph nodes. The above content is for reference only. Please refer to the doctor’s guidance for specific medication and treatment.