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Abdominal Pain

Emergency

Abdominal pain spans benign self-limited conditions and immediately life-threatening surgical emergencies. Use this page to orient to the acute abdomen, abdominal aortic aneurysm, hepatobiliary disease, obstruction, and inflammatory causes.

Red flags

  • Shock, syncope, severe pain out of proportion, or peritonism
  • GI bleeding, pulsatile abdominal mass, or collapse
  • Fever with guarding/rigidity or rapidly worsening distension
  • Persistent vomiting with dehydration or bowel obstruction features

Common causes to keep in the differential

Appendicitis
Cholecystitis / biliary colic
Bowel obstruction
Pancreatitis
Upper or lower GI bleeding
Abdominal aortic aneurysm

Next practical steps

  • Decide early whether this is an unstable acute abdomen or a stable diagnostic workup.
  • Use the linked topics to structure common surgical and vascular differentials.
  • Escalate for peritonitis, sepsis, or suspected ruptured AAA.

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Use MedVellum search when the presentation is mixed, atypical, or you need a broader differential before narrowing into a topic page.

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