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Diarrhoea means passing loose or watery stools more often than usual. It's a common problem that usually gets better on its own in a few days.
Key facts
Yes, diarrhoea affects most people at some point. It is one of the most common reasons people visit their GP or pharmacist.
Anyone can get diarrhoea, but it is more common in young children, older adults, and people with weakened immune systems. Travellers to areas with different food and water safety may also be at higher risk.
Your doctor will usually diagnose diarrhoea based on your symptoms and a short conversation. They may ask about recent travel, foods you have eaten, and any medicines you take.
Your doctor will ask questions and might examine your stomach. They may offer advice on rehydration and suggest you rest. If a test is needed, you will be given instructions on how to provide a sample. Most cases do not require testing.
Treatment for diarrhoea focuses on preventing dehydration and letting the body clear the cause. Most people recover without medicines other than rehydration fluids.
If diarrhoea is caused by a bacterial infection, your doctor may prescribe antibiotics. For viral diarrhoea, antibiotics do not work. Sometimes doctors recommend medicines to slow down the gut, but these are not suitable for everyone, especially if there is blood or high fever. These are only used for short-term control.
Most diarrhoea is short-lived, so you only need to adjust your routine for a few days. Stay close to a toilet, rest, and keep drinking. Plan to take time off work or school if needed.
Eat light, easy-to-digest foods. Avoid heavy exercise until you feel fully recovered, as your body needs energy to heal. Gentle walking is fine if you feel up to it.
Diarrhoea can be embarrassing and stressful, especially if it happens in public or disrupts your plans. It is normal to feel anxious, but remind yourself that it is a common problem and usually passes quickly. If you have ongoing diarrhoea (like with IBS), it can affect your mood – talk to your doctor, as help is available.
Many cases of diarrhoea can be prevented with good hygiene and food safety. Washing hands thoroughly after using the toilet and before eating is the most effective step. Avoid drinking untreated water when travelling, and make sure food is cooked properly.
There is a vaccine for rotavirus, a common cause of severe diarrhoea in young children. It is given as part of the routine childhood immunisation programme in many countries. Ask your health visitor or GP about it.
There is no routine screening for diarrhoea. If you have ongoing symptoms, your doctor may suggest tests to find a cause.
For most people, diarrhoea clears up in a few days with simple home care. Even when it is caused by a more serious condition, modern treatments are very effective. With the right support, most people recover fully. If you follow the self-care advice and seek help when needed, the outlook is excellent.
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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.
Surgery is very rarely needed for diarrhoea itself. It may be considered if diarrhoea is caused by a serious condition like inflammatory bowel disease that does not respond to other treatments, but this is unusual.