Abdominal pain

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For pediatric patients see Abdominal pain (peds)


  • Patients with immunosuppression often have delayed or atypical presentations
  • Fever is not a reliable marker for surgical disease
  • Abdominal pain may be particularly misleading in elderly or diabetics
  • Consider pain in any abdominal or pelvic region in a female of child-bearing age, including pre-teens, is an ectopic pregnancy until proven otherwise

Clinical Features

  • Abdominal pain (see workup by location)
  • May be associated with nausea, vomiting or diarrhea
  • Fever may be present in pain from infectious etiology

Differential Diagnosis

Diffuse Abdominal pain

Epigastric Pain

RUQ Pain

Left upper quadrant abdominal pain

RLQ Pain

LLQ Pain

Pelvic Pain

Pelvic origin

Abdominal origin

Extra-abdominal Sources of Abdominal pain



  • Treat underlying cause
  • Multiple studies show pain medicine should not be withheld for fear of masking symptoms


  • Depends on etiology

See Also