Lymph nodes in the neck need to be seen in the head and neck surgery department and hematology department when visiting the hospital. If the hospital does not have a separate head and neck surgery department, you can visit the general surgery department. The causes of swollen lymph nodes include the following: 1. Consider that it is caused by the stimulation of the patient’s gingivitis or oral inflammation, etc. Lymph nodes belong to the body’s immune organs, when the body local or systemic inflammation stimulation, will lead to lymph node enlargement, when the gums or oral inflammation, will stimulate the neck lymph node hyperplasia and the formation of nodules. 2, consider is caused by acute lymphadenitis. The nodules caused by acute lymphadenitis will be accompanied by local redness, swelling, pain, etc. Treatment requires the application of antibacterial drugs and detoxification drugs. 3, the causes of lymph nodes in the neck, but also need to consider tumors or rheumatism and other inflammatory system diseases. If the lymph nodes in the neck do not subside, you need to go to the hospital for ultrasound or routine blood tests to clarify.