Can be due to disease or medicines
Management
- Treat the cause
- Vomiting typically relieves nausea
If due to gastric stasis or delayed bowel transit time
- Give metoclopramide 10–20 mg every 8 hours (30 minutes before meals; same dose SC or IV)
If due to metabolic disturbance (liver/renal failure, medicines e.g., chemotherapy)
- Give haloperidol 1.25 to 2.5 mg nocte (PO or SC)
If due to raised intracranial pressure
- Dexamethasone 8-16 mg od
If due to visceral stretch or compression
- Promethazine 25 mg every 8 hours or
- Hyoscine butylblomide 20-40 mg 8 hourly