Your baby has been sick twice and has had several watery nappies, and you are watching closely for signs things are getting worse. Tummy bugs are common, especially in babies at nursery, and most pass within a few days. With baby vomiting and diarrhea, the most important job is keeping your baby hydrated. Here is what to do and when to get help.
Quick answer: baby vomiting and diarrhea
- Most common cause: a viral tummy bug (gastroenteritis), often norovirus or rotavirus.
- Keep feeding: breast or formula milk in smaller, more frequent amounts.
- Watch for dehydration: fewer wet nappies, dry mouth, sunken soft spot, unusual sleepiness.
- Vomiting usually stops in 1 to 2 days; diarrhoea can last 5 to 7 days.
Common causes
- viral gastroenteritis
- other infections, such as ear or urine infections
- food intolerance or allergy
- less commonly, a blockage or other medical problem
How to care for your baby
- Keep breastfeeding or giving formula, offering small amounts often.
- Ask about oral rehydration solution from a pharmacist, especially if your baby is vomiting or very loose.
- Do not give fruit juice, fizzy drinks or plain water to babies under 6 months.
- Continue solids if your baby wants them; bland foods are fine.
- Protect the nappy area with barrier cream.
- Wash hands thoroughly to stop the bug spreading.
Signs of dehydration
- fewer wet nappies or dark urine
- dry mouth and lips, no tears
- sunken soft spot or eyes
- cold hands and feet
- very sleepy, floppy or irritable
See dehydration in babies and spitting up vs vomiting.
When to talk to your doctor
- a baby under 3 months with vomiting or diarrhoea
- any signs of dehydration
- green or yellow vomit, or blood in vomit or poo: seek urgent help
- forceful (projectile) vomiting, or vomiting for more than 24 hours
- diarrhoea for more than 7 days, or fever
- a swollen, hard tummy or severe pain
Frequently asked questions
Should I stop milk feeds?
No. Keep giving breast milk or formula. Do not dilute formula.
When can my baby go back to nursery?
Usually 48 hours after the last episode of vomiting or diarrhoea.
Is there a vaccine?
Yes, the rotavirus vaccine is part of many national schedules. See baby vaccinations.
Sources
- NHS: Diarrhoea and vomiting
- NICE: Diarrhoea and vomiting caused by gastroenteritis in under 5s
- American Academy of Pediatrics, HealthyChildren.org: Diarrhea and Vomiting
This guide is general information, not medical advice. If you are worried about your baby, contact your doctor straight away.