Two lymph nodes in the neck connected together, usually abnormal, usually with lymphadenitis, lymph node tuberculosis as well as lymphatic metastasis of malignant tumors, connective tissue disease and other conditions caused. 1. Inflammation of lymph nodes: Lymphadenitis is a benign lesion that occurs in the lymph nodes, usually caused by bacterial infections, which can cause patients to have painful and enlarged lymph nodes, and two lymph nodes are connected together. 2. Lymph node tuberculosis: After the patient’s lymph is infected with Mycobacterium tuberculosis, lymph node tuberculosis will occur, causing the patient’s weakness, low-grade fever, night sweats (sweating abnormally after going to sleep, and the sweating stops after waking up) and lymph node enlargement and other symptoms, and when the situation is serious, it may also result in the patient’s two lymph nodes in the neck being connected together. 3. Malignant tumor: malignant tumor lymphatic metastasis to the lymph nodes in the neck, or lymphoma invades the lymph nodes in the neck, these lymph nodes may appear enlarged, how, leading to the situation that the two lymphs in the neck are connected together. 4. Connective tissue disease: some connective tissue diseases, such as systemic lupus erythematosus, tuberculosis, etc., encroach on the lymph nodes in the neck may also lead to lymph node enlargement and adjacent lymph nodes stick together. When two lymph nodes in the neck are connected together, the patient should be examined promptly and treated for the cause of the disease.