DDx for acute abdominal pain include
1-Inflammatory (gastritis, PUD, cholecystitis, appendicitis, peritonitis, diverticulitis)
2. Vascular (AAA, inferior MI, mesenteric ischemia)
3- Obstruction (bowel, ureter, bladder)
4-Luminal perforation
5-and Obstetric/Gyn causes in females.
Image negative abdominal pain include
DKA, IBS/functional pain, withdrawal, angioedema, lead toxicity, vaso-occlusive events and porphyria.