Enlarged lymph nodes may cause swelling of the head because of lesions in the lymph nodes of the head, such as lymphadenitis and lymphatic tumors, which can lead to swelling of the head. Lymph nodes are distributed all over the body, and the lymph nodes in the head include submandibular lymph nodes, sub-chin lymph nodes, posterior occipital lymph nodes, anterior lymph nodes, posterior lymph nodes and so on. 1. Lymphadenitis: Lymphadenitis is a benign disease, usually due to Staphylococcus aureus infection or hemolytic streptococcus infection, which will appear in the head local lymph node pain, swelling and other symptoms. 2. Malignant tumors: lymphoma, lymphoblastic leukemia, lymphatic metastasis of malignant tumors and other diseases that invade the lymph nodes in the head can lead to the enlargement of these lymph nodes, causing swelling of the head. These enlarged lymph nodes are often hard and have poor mobility without tenderness. Patients with enlarged lymph nodes causing head swelling are advised to go to the hospital in time, clarify the cause of the disease, and follow the doctor’s instructions for treatment.