Holiday stress.Stress -- triggered by mall shopping, cooking, cleaning, travel, and family conflict -- can cause upset stomach and heartburn. On top of that, many people cope with stress by overeating and drinking too much.
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Most cases are mild, but for some people it is severe. Travellers' diarrhoea tends to happen in the first week of travel. Symptoms last on average 3 to 5 days and usually get better without you needing specific treatment.
Defined as three or more bouts of loose, watery poo in a 24-hour period, often accompanied by either nausea, vomiting and stomach cramps, travellers' diarrhoea is mainly caused by several different germs, bacteria, viruses and parasides which can be spread via eating and drinking contaminated food and water.