Causes of Acute Abdomen

• Why the list is long+−

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  Many organs sit in the abdomen; inflammation, perforation, obstruction, ischemia, bleeding, and gynecologic emergencies can produce similar pain. That is why the differential starts broad.

• Common considerations (summary)+−

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  Appendicitis, cholecystitis, pancreatitis, diverticulitis, bowel obstruction, incarcerated hernia, perforated ulcer, renal colic, and ectopic pregnancy in reproductive-age patients.

• Vascular emergencies+−

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  Ruptured aortic aneurysm and mesenteric ischemia (embolus/thrombosis) can deteriorate within hours. Sudden severe pain with systemic decline — do not watch the clock.

• Age, pregnancy, and special groups+−

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  Children may give unclear histories; older adults may show muted fever and local signs yet decline fast. Ectopic pregnancy, ovarian torsion, and pelvic infection stay on the differential in reproductive age. Immunosuppression or steroids can mask classic findings — keep the suspicion threshold low.

  • Children: irritability, vomiting, guarding
  • Older adults: muted signs, rapid decline
  • Pregnancy possibility: always ask / test

More chapters in this hub

• Acute Abdomen Pain Location

  What patients notice — and which warning signs need urgent care

• Acute Abdomen Onset Patterns

  What patients notice — and which warning signs need urgent care

• Pain Character

  Constant, colicky, referred, and migrating pain

• Associated Symptoms

  Vomiting, bleeding, jaundice, and systemic red flags

• Acute Abdomen Hospital Course

  Hospital course — explained for shared decision-making