Paediatrics·Paediatrics
Diarrhoea in children
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Diarrhoea in children means having loose, watery stools (poo) more often than usual. It usually goes away on its own, but the main worry is dehydration – when the body loses too much water and salts.
Key facts
Yes, diarrhoea is very common in children, especially those under 5 years old.
It affects children of all ages, but babies and toddlers are most likely to get it.
A doctor will ask about your child’s symptoms, check for signs of dehydration, and may take a small sample of poo to test for infection.
The doctor will explain the likely cause and give advice on how to prevent dehydration. They may also suggest a follow-up if symptoms do not improve.
Treatment focuses on keeping your child hydrated and letting the body fight off the infection. Medicines are usually not needed.
In some cases, a doctor may recommend antibiotics for a bacterial infection. Do not give any anti-diarrhoea medicines to children without a doctor’s advice, as they can be harmful.
Keep your child home from school or nursery until they have had no loose stools for at least 48 hours. Change nappies carefully and wash hands well after each change to stop the infection spreading.
Allow your child to rest as needed. When they feel better, gradually return to a normal diet. Avoid heavy or fatty foods for a few days.
Diarrhoea can be stressful for both you and your child. Stay calm, offer plenty of reassurance, and don’t put pressure on them to eat. If you feel overwhelmed, talk to your health visitor or family doctor.
Many cases can be prevented with good hygiene and the rotavirus vaccine (given to babies as part of routine immunisations).
The rotavirus vaccine is offered to babies at around 8 and 12 weeks of age. It helps prevent severe diarrhoea from rotavirus.
The outlook is excellent. Most children recover fully within a week with proper fluid intake. Dehydration can be treated successfully if caught early. With good home care, serious complications are rare.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 16, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.