There are many causes of swollen lymph nodes that need to be diagnosed by a doctor. Some swollen lymph nodes are inflammatory reactions to infections, bacterial infections, EBV infections, and tuberculosis infections can cause swollen lymph nodes, most commonly bacterial infections, and less commonly hematologic or neoplastic diseases. Respiratory tract infections combined with swollen lymph nodes in the submandibular and cervical areas are more common, usually with tenderness and increased leukocytes and neutrophils on routine blood tests. It can be treated with additional antibiotics, and amoxicillin can be preferred for oral administration without allergy to penicillin, which will reduce and subside in about 7 days. Infectious mononucleosis caused by EBV infection can also cause enlargement of lymph nodes, which can subside in 10-14 days. Special tuberculosis tests, such as tuberculin and T-cell tests for tuberculosis infection, are required in cases of tuberculosis infection, and the swollen lymph nodes may persist for a month or more after tuberculosis infection.