How traveller's diarrhoea differs in travellers

During travel, diarrhoea may follow exposure to unfamiliar bacteria, viruses, or parasites in food, water, surfaces, or close-contact settings. Heat, changed meals, alcohol, stress, and medicines can also affect the gut. The cause cannot be identified from the symptom alone. Details such as when it began, the number of bowel movements, blood or mucus, vomiting, fever, recent antibiotics, and the places visited help a clinician judge the next step.

Replace lost fluid with frequent small sips; an oral rehydration solution can help replace water and salts. Eat light foods when able and wash hands after using the toilet and before eating. Choose sealed or treated water and food that is thoroughly cooked and served hot. Avoid anti-diarrhoeal medicines if you have blood in the stool or a high temperature unless a clinician advises otherwise. Antibiotics are not suitable for every episode and should be prescribed for the situation.

Seek urgent care for severe dehydration, fainting, confusion, blood or black stool, severe abdominal pain, or repeated vomiting that prevents drinking. Get medical advice for high fever, symptoms in a young child or older adult, pregnancy, or a weakened immune system. Arrange assessment if diarrhoea continues after returning home, keeps recurring, or follows recent antibiotic use.

Ask whether you need testing, oral rehydration guidance, or prescription treatment. Tell the clinician your travel route, water and food exposures, medicines, and any fever or blood. Ask how to prevent spread to people sharing your accommodation.