Final answer:
Lymphadenopathy is the swelling of lymph nodes, usually caused by inflammation in response to an infection or immune response. This condition can be a symptom of various underlying conditions, including bacterial or viral infections and lymphoma.
Step-by-step explanation:
Lymphadenopathy refers to the swelling of lymph nodes. It is a condition that occurs when the lymph nodes become inflamed, usually in response to an infection or other immune response. Inflammation in the lymph nodes can cause them to enlarge and become tender to the touch, and it is often a symptom of an underlying condition. For example, a swollen lymph node can be a sign of a bacterial or viral infection, or even a type of cancer called lymphoma.