Medical and Health Care

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Vomiting

Key Causes

Gastrointestinal

Systemic/Neurological

Gastrointestinal

Gastritis, peptic ulcer

Systemic/Neurological

Raised intracranial pressure

Gastrointestinal

Small bowel obstruction

Systemic/Neurological

Migraine

Gastrointestinal

Pancreatitis

Systemic/Neurological

CNS infection

Gastrointestinal

Appendicitis

Systemic/Neurological

Toxin exposure

Gastrointestinal

GORD

Systemic/Neurological

DKA

Investigations

Primary

FBC, CRP/ESR

U&E (monitor Na+/K+ loss)

Lipase/amylase (pancreatitis)

β-hCG

ABG if metabolic imbalance suspected

Further testing

LFTs, coagulation if liver disease suspected

Cortisol, ACTH

Imaging GI or brain depending on signs

Emergency Triggers

Green bilious vomiting, severe dehydration, haematemesis and altered consciousness