How long it takes for the enlarged lymph nodes to subside depends on the cause and severity of the condition, usually about 10 days for less serious cases, and 2-3 weeks for serious cases, or even longer. If the swelling is caused by lymphadenitis, after regular treatment, the swelling can usually subside in about 7-10 days. However, if the condition is serious, it may take longer for the swelling to subside. Lymph node enlargement caused by tuberculosis requires anti-tuberculosis treatment, which takes a longer time, and depending on the patient’s condition, the elimination time may be 15-30 days or even longer. While lymph node enlargement caused by tumor or lymphoma needs to be treated against the tumor, such as surgical resection or chemotherapy or radiotherapy, and the elimination time is related to the treatment effect. In addition, it is recommended that patients who find swollen lymph nodes go to the hospital in time to avoid delaying their condition.