Inflammation of a lymph node as a reaction to nearby infection, bacterial or viral. Inflammation of the lymph nodes is often associated with inflammation of the lymph ducts running from the infected area to the node concerned; the inflamed ducts are visible as red stripes on the skin. If a lymph node is inflamed as a result of bacterial infection an abscess may form, particularly in the groin or armpit. Generally the inflammation disappears with the infection, although antibiotics are often prescribed in cases of bacterial infection. An abscess in a lymph node should always be lanced, under local or general anaesthetic.