Mesenteric ischemia is a chronic condition caused by poor blood supply to your intestines. It results from narrowing in one or more of the arteries supplying blood to your intestines (visceral arteries). It also can occur suddenly as a result of a blood clot severely restricting blood flow (acute mesenteric ischemia). Lack of oxygen-rich blood can permanently damage your intestines. You may experience sudden abdominal pain and, less often, bloody stools. This situation requires immediate medical care.
Chronic mesenteric ischemia occurs gradually as the main visceral arteries narrow. You may develop pain after eating, lose weight or develop a fear of eating caused by fear of stomach pain.