This page summarises publicly available NHS information for educational purposes only. It is not medical advice or a diagnosis. Always consult a qualified healthcare professional.
What is diarrhoea?
Diarrhoea (runny, watery stools) is common and usually clears up on its own within a few days. It is often caused by a stomach bug (gastroenteritis), food poisoning, anxiety, food allergy, or medications. The main risk is dehydration.
When NHS resources suggest seeing a GP
- Diarrhoea has not improved after 7 days
- You have bloody diarrhoea
- You have signs of dehydration (dark urine, dizziness)
- You have recently been in hospital or taken antibiotics
Self-care information from NHS
- Drink plenty of fluids — small sips often
- Eat when you feel able to — try bland foods
- Rest at home
- Avoid fruit juice and fizzy drinks
Common questions
How long does diarrhoea usually last?
Most cases last 2-4 days. If it lasts more than 7 days in adults, see a GP.
Should I take anti-diarrhoea medicine?
You can buy loperamide from a pharmacy to slow diarrhoea, but avoid it if you have blood in your stool or a high temperature. It is not suitable for children under 12.
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This page is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your individual situation. NorMed organises publicly available NHS information and is not affiliated with the NHS.