The causes of vomiting are varied are many, including almost any major system disease:
- Any gastrointestinal disease
- Acute infections – e.g. influenza, pertussis
- CNS Disease – e.g. raised ICP, meningitis, vestibular disturbances, migraine
- Metabolic causes – e.g. uraemia, diabetic ketoacidosis, hypercalcaemia
- Drugs – e.g. digoxin toxicity, opioids, cytotoxics
- Reflex – e.g. severe pain, such as AMI
- Psychogenic
- Pregnancy – often early morning
- Alcoholic excess – often early morning
