Lymphadenopathy refers to the swelling or enlargement of lymph nodes, which are small, bean-shaped structures that play a crucial role in the body's immune system. This condition can occur in one area (localized) or in multiple areas (generalized) and may be caused by infections, autoimmune diseases, or cancers. The lymph nodes can be found in various parts of the body, including the neck, armpits, and groin. When they become enlarged, it may indicate that the body is fighting an infection or responding to other health issues. While often benign, persistent or painful lymphadenopathy should be evaluated by a healthcare professional.