Generally, lymph node nodal disease may be acute lymph node inflammation, malignant tumor or blood system disease. 1. Acute lymphadenitis: lymph node nodal disease is usually caused by disease infection, bacterial or viral infection. If a person suffers from acute tonsillitis, pharyngitis, inflammation of the face, teeth, etc., the inflamed area will migrate to the surrounding lymph nodes and acute lymphadenitis will appear. 2. Malignant tumor: lymphadenopathy refers to the enlargement of lymph nodes. If the patient suffers from stomach cancer, lung cancer or uterine cancer, the tumor cells will metastasize to the lymph nodes and the lymph nodes will become enlarged. Therefore, lymphadenopathy may also be malignant tumor disease. 3. Blood system diseases: If the patient suffers from blood system diseases such as leukemia, non-Hodgkin’s lymphoma or Hodgkin’s lymphoma, it may also be lymph node nodal disease. These types of blood system diseases can directly cause abnormal lymphocytes and enlarged lymph nodes. If a patient develops enlarged lymph nodes, he or she should go to the hospital in time to clarify the cause of the disease and prevent malignant diseases from occurring so as not to delay the condition.