How long it takes for lymphadenitis behind the ear to heal on its own is mainly related to the cause of the infection, the patient’s resistance and other circumstances, and the exact recovery time varies from person to person. Inflammation of the lymph nodes is an immune response of the body and can be triggered once inflammation occurs in the organs surrounding the lymph nodes. The time to remission varies depending on the severity of the inflammation. Clinical studies have found that the majority of lymphadenopathies are caused by respiratory tract infections or local inflammation of the surrounding tissues. In mild cases, the symptoms can resolve themselves in about 1 week with a good body resistance. In more severe cases of local inflammation, aggressive infection control treatment with sensitive antibiotics may be indicated. For the vast majority of patients with lymphadenitis, significant improvement can usually be seen in about 1-2 weeks. However, if the lymph nodes are significantly enlarged, the recovery may take longer, about 1-3 months. In addition, patients with lymphadenitis need to take rest while undergoing medication.