Abdominal pain is common and often handled as unimportant. Acute and harsh abdominal ache, though, is almost invariably an indication of intra-abdominal illness. It may be the only indication of the requirement for surgery. Gangrene and puncture of the bowel can happen less than 6 hours from start of symptoms in several situations (stoppage of the intestinal blood supply from a choking obstacle or an arterial embolus). Abdominal pain is of particular concerning in very young or very old patients and who have HIV infection or taking immuno-suppressants. Abdominal pain is common and frequently unimportant. Acute and harsh abdominal ache, though, is almost always an indication of intra-abdominal illness. It may be the only indicator of the necessity for surgery. Gangrene and perforation of the gut can happen less than 6 hours from start of symptoms in several situations (stoppage of the intestinal blood supply from a choking obstacle or an arterial embolus). Abdominal pain is of special