Symptoms of enlarged lymph nodes are mainly characterized by palpable enlarged lymph nodes, with or without pain. Lymph nodes are an important part of the body’s immune system, and they collect lymphatic fluid from the corresponding tissues and organs, which can lead to enlargement of the lymph nodes when these tissues or organs are diseased. The common causative factors of enlarged lymph nodes are: infection, reactive hyperplasia, tumor metastasis and so on: 1. Lymph node enlargement caused by infectious diseases, its symptoms can be manifested as enlarged lymph nodes, the skin can be red and swollen, often accompanied by lymph node pain, tenderness, the surface of the enlarged lymph nodes is smooth, soft texture, good mobility, the inflammation is not controlled in time can be pus, or even broken pus. 2. Lymph node enlargement caused by reactive hyperplasia is often manifested as painless enlarged lymph nodes, which can be palpated, and the texture of lymph nodes is tough, usually without skin redness and swelling. 3. Metastatic lymph node enlargement of tumor, usually early lymph nodes without pain symptoms, hard texture, adhesion with surrounding tissues is not easy to push, with the progress of the disease lymph nodes gradually increase in size, and pain symptoms. As the disease progresses, the lymph nodes gradually increase in size and painful symptoms appear. It is recommended to go to the hospital in time to consult the doctor and find out the cause of the disease.