What causes lymph node inflammation?

The causes of lymph node inflammation are varied, primarily including the following aspects: 1. **Infection**: As part of the immune system, lymph nodes may react to bacterial, viral, or other microbial infections in the body, leading to congestion and swelling of the lymph nodes. Common infections such as respiratory tract infections, adenovirus infection, tonsillitis, and abdominal infections can all trigger lymph node inflammation. 2. **Unhealthy lifestyle habits**: Irregular作息 patterns, an unhealthy diet (e.g., frequent consumption of spicy, irritating, or cold foods), exposure to cold temperatures, and similar factors may also lead to decreased immunity, thereby increasing the risk of lymph node inflammation. 3. **Diseases and tumors**: Certain diseases, such as tuberculosis, rheumatic diseases, and systemic autoimmune disorders like systemic lupus erythematosus (SLE), may involve the lymph nodes during disease progression, causing lymph node inflammation or enlargement. If symptoms such as persistent lymph node swelling or pain occur, it is recommended to seek timely medical evaluation to determine the underlying cause and receive appropriate treatment.