Diarrhoea — loose or watery stools occurring more than three times a day — is usually caused by viral gastroenteritis and resolves within a few days. The greatest risk is dehydration, especially in children and older adults. Proper home care with oral rehydration is the foundation of safe management before you need medical help.
Common Causes
- Viral gastroenteritis — rotavirus, norovirus, and other intestinal viruses
- Food poisoning from contaminated food or water
- Bacterial infections — Salmonella, E. coli, Campylobacter
- Medication side effects — antibiotics, laxatives, magnesium supplements
- Food intolerances — lactose, artificial sweeteners
- Stress and — increase gut motility
- Traveller’s diarrhoea from unfamiliar bacteria
- Parasitic infections — Giardia, in prolonged cases
Step-by-Step Home Care
Clinical guidance from NIH[1] stresses matching home care to symptom severity and seeking urgent review when red-flag signs appear.
When to See a Doctor
| Symptom or situation | Recommended action | Urgency |
|---|---|---|
| Signs of dehydration — sunken eyes, no tears, dry mouth, | Oral or IV rehydration needed; children need prompt care | Urgent — same day |
| Blood or mucus in stool | Evaluate for bacterial dysentery or inflammatory conditions | Within 24 hours |
| Diarrhoea lasting more than 7 days in adults or 2 days in infants | Rule out persistent infection or malabsorption | Within 48 hours |
| High above 39°C with diarrhoea | May indicate invasive bacterial infection | Same day |
| Severe abdominal pain with diarrhoea | Rule out complications; seek emergency care if sudden and intense | Urgent to emergency |
| Recent travel to areas with cholera or typhoid risk | Specific testing and treatment may be needed | Within 24 hours |
Frequently Asked Questions
How do I make ORS at home?
Mix 6 level teaspoons of sugar and half a level teaspoon of salt in 1 litre of clean, boiled-cooled water. Stir until dissolved. Do not add extra salt or reduce sugar — incorrect ratios are ineffective or dangerous. Commercial ORS sachets are preferred when available.
Should I stop eating during diarrhoea?
No. Continued nutrition supports recovery and maintains energy. Eat small, bland meals. Fasting worsens weakness and does not shorten diarrhoea duration in most cases.
Is loperamide safe for adults?
Short-term loperamide can reduce stool frequency in adults with mild traveller’s diarrhoea. Avoid it if you have bloody diarrhoea, high , or suspected bacterial dysentery. Never use without medical guidance in children.
When is diarrhoea dangerous for children?
Diarrhoea kills more children globally than most other illnesses, primarily through dehydration. Watch for fewer wet nappies, sunken fontanelle in infants, listlessness, or inability to drink. Any of these warrant immediate medical care.
For verification and deeper reading, NHS[2] offers independent, evidence-based information you can cross-check with your own clinician.
Related Guides
References & further reading
Sources cited in this guide. DIMH links to independent medical institutions for verification — not as a substitute for personal medical advice.
- NIH — Digestive diseaseshttps://www.niddk.nih.gov/health-information/digestive-diseases
- NHS — Stomach ache and abdominal painhttps://www.nhs.uk/conditions/stomach-ache/
- NIH — Complementary and integrative healthhttps://www.nccih.nih.gov/
- MedlinePlus — Herbal medicinehttps://medlineplus.gov/herbalmedicine.html
- NIMH — Mental health informationhttps://www.nimh.nih.gov/health
- NHS — Mental healthhttps://www.nhs.uk/mental-health/
When home care is not enough: chest pain, trouble breathing, confusion, or symptoms that worsen quickly need urgent medical attention.
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