Mesenteric adenitis is a condition that affects children and teens more often than adults. This condition occurs when the lymph nodes in the abdomen become swollen when trying to fight off a bacterial or intestinal infection. Our AFC Urgent Care Chattanooga team highlights important info about mesenteric adenitis below, so keep reading. What Causes Mesenteric Adenitis? The most common cause is a viral or bacterial infection in the intestines, as we said previously. When an ...