The swollen lymph nodes in the neck with pain are often acute and chronic lymphadenitis, which indicates the presence of inflammation in the surrounding tissues and organs, mainly confined to inflammation in the oral and dental pharynx or larynx, and are treated clinically by anti-inflammatory or local treatment, including surgery and systemic anti-inflammatory symptomatic treatment, such as tonsillectomy and local dental abscess incision and drainage. As the inflammation subsides, the lymph nodes and pain in the neck will naturally shrink or disappear, which is a normal reaction of the body, and the benign lesions can be cured. As the inflammation of tissues and organs subsides, the diameter of lymph nodes will shrink and the pain will disappear, but they will not return to their original state where they cannot be seen or felt. If inflammation occurs again in the local tissues and organs, the painful condition of the lymph nodes in the neck will appear again, and the cycle will repeat. If there are no symptoms in the local lymph nodes, including pain, fever, hard texture, gradual increase in size, or even fusion into a huge mass, it often indicates malignant lymphoma or metastatic tumor, which must be taken very seriously.