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Vomiting without nausea

 i.e. CTZ is not affected. Usually local gastro-intestinal cause

1. Pain induced

Vomiting & pain

Visceral pain which is usually of GIT origin but maybe related to other organs e.g. myocardial infarction.

  • Gastro-duodenal: ulcer
  • Gastro-intestinal: inflammation
  • Hepatobiliary: inflammation
  • Pancrease: inflammation, cancer
  • Peritoneum: inflammation, cancer
  • Other: Myocardial infarction.

2. Obstructive

Vomiting, abdominal swelling, absolute constipation

  • Pyloric: copious brownish acid vomitus
  • Duodenal: bile
  • Intestinal: foecal

3. Infective

vomiting & fever, diarrhea

e.g. gastro-enteritis.

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4. Other GIT causes

vomiting & other GIT manifestations

e.g. CHF leading to gut congestion.

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