If you feel a small ball in your jaw and it moves, it is mostly a swollen lymph node. The more common is the swelling of inflammatory lymph nodes caused by head and facial infections, which may be accompanied by pressure pain in acute cases and no pressure pain in chronic cases; however, we still cannot exclude the swelling of lymph nodes caused by special infections, such as tuberculosis and AIDS. Other cases such as submandibular gland tumors, malignant tumors from other parts metastasizing to lymph nodes, and congenital malformations. I. Common causes: 1. tonsillitis: pronounced and severe pain in the throat, radiating to the ear, painful swallowing, accompanied by swollen submandibular lymph nodes; acute attacks may present systemic symptoms such as high fever, chills, malaise, headache, etc.; 2. pharyngitis: common symptoms such as dry throat, fever, pain when swallowing, radiating to the ear, and in severe cases, systemic symptoms such as fever, headache, malaise, etc.; 3. lymphatic tuberculosis. Mostly due to infection of the mandibular lymph nodes by Mycobacterium tuberculosis through the lymphatic vessels or blood, manifested as swollen lymph nodes, accompanied by night sweats, low fever in the afternoon and other symptoms; 4, tumors: cancer cells can metastasize through the lymphatic vessels and blood, and when the mandibular lymph nodes are involved, swollen lymph nodes can appear, such as lymphosarcoma; 5, other: such as leukemia, acute stage of AIDS infection, pneumonia, periodontitis, sinusitis, etc., may lead to enlargement of lymph nodes, accompanied by bleeding, fever, cough and other discomforts, which need symptomatic treatment. Common treatment: 1. Inflammatory treatment: Antibiotics such as cephalosporin and penicillin should be used for anti-inflammatory treatment under the guidance of a doctor. In addition, patients with periodontitis also need symptomatic gum scraping, etc.; sinusitis can be supplemented with nasal sprays, such as fluticasone propionate, furosemide nasal drops, etc., which can help improve the symptoms; 2, tuberculosis treatment: anti-tuberculosis drugs need to be used, need to be under the guidance of a physician. Commonly used drugs include rifampin, isoniazid, levofloxacin, streptomycin, etc.; 3, tumor treatment: in addition to surgical excision for larger lymph nodes, adjuvant radiotherapy, chemotherapy, targeted therapy, etc., according to the condition, the specific treatment needs to be integrated with the condition and the patient’s physical condition by the doctor to develop a treatment plan. In addition, if patients have congenital malformation, they can also be surgically removed under the guidance of doctors. Daily attention to moderate exercise, drink more water, eat more fresh vegetables and fruits, eat less spicy and stimulating food, stay up less, and maintain a happy mood can help strengthen the body’s self resistance and prevent inflammatory lymph node enlargement.