Which condition refers to inflammation of the lymph nodes?

The condition that refers specifically to inflammation of the lymph nodes is known as lymphadenitis. This occurs when the lymph nodes become swollen and tender, usually as a response to an infection or other inflammatory process. Lymphadenitis involves both the enlargement and inflammation of the lymph nodes, which can result from various causes, such as bacterial or viral infections.

In contrast, lymphadenopathy is a broader term that encompasses any disease or condition affecting the lymph nodes, whether it involves inflammation, enlargement, or neoplastic changes. Lymphatic obstruction refers to a condition where the flow of lymphatic fluid is blocked, leading to swelling but not necessarily inflammation of the lymph nodes. Lymphoma is a type of cancer that originates in the lymphatic system and can involve the lymph nodes, but it does not specifically imply inflammation. Understanding these distinctions clarifies why lymphadenitis is the correct answer in the context of the question about inflammation of the lymph nodes.