Most arthritis is a sterile inflammatory condition and does not usually cause swollen lymph nodes. If arthritis is combined with a joint infection, it may also cause lymph node enlargement. Most arthritis, such as osteoarthritis, rheumatoid arthritis, traumatic arthritis, etc., is aseptic inflammation and localized joint lesions, which generally do not cause a systemic immune response and do not cause lymph node enlargement. If the infectious arthritis is caused by bacterial infection, the bacteria enter the blood circulation and are cleared by the lymph nodes will cause lymph node enlargement, such as infectious arthritis of the knee will cause inguinal lymph node enlargement. If the symptoms of arthritis appear, it is recommended that the patient go to the hospital for medical examination to clarify the cause of the disease and receive regular treatment.