| Metabolic | Toxicology | Neurological | Infection | Other |
|---|---|---|---|---|
| DKA Addison disease Hypercalcaemia uremia Porphyria Phaeochromocytoma | lead poisoning metal ingestion corrosive ingestion Cannabinoid hyperemesis syndrome Narcotic bowel syndrome Withdrawal syndromes Body packing Envenomation | Abdominal migraine Cyclical vomiting Herpes zoster Irritable bowel syndrome | hepatitis gastroenteritis Tuberculosis (TB) intestinal parasites typhoid malaria | Sickle cell crisis vasculitis intestinal angioedema Familial Mediterranean Fever MI & pericarditis pneumonia & pleurisy |