Stomach pain in hot weather: what to know

Heat can increase fluid loss through sweating. Dehydration may cause thirst, dry mouth, headache, darker urine and muscle cramps, while heat strain can bring weakness or nausea. Travel, outdoor meals, spoiled food and contaminated water can also cause abdominal discomfort; diarrhoea or vomiting may appear later. Heavy meals, alcohol and lying down soon after eating can aggravate reflux or stomach irritation. Consider when the pain began, what you ate or drank, whether urine output changed, and whether anyone else became unwell.

Move to a cool place, rest and take frequent small sips of water or an oral rehydration drink. Choose light foods when able and avoid alcohol, very fatty meals and foods that clearly worsen symptoms. Do not force fluids if you are repeatedly vomiting. Keep food safely chilled and use safe drinking water. A pharmacist can advise on symptom relief, especially for children, older adults, pregnancy or long-term illness. Arrange review if pain does not improve after cooling and rehydration.

Get emergency help for confusion, collapse, inability to drink, very little urine, severe weakness, a hot dry body, severe or worsening pain, blood in vomit or stool, or a swollen rigid abdomen. Seek prompt assessment for fever with persistent pain, repeated vomiting, yellowing of the eyes, or symptoms after suspect food or water. Heat illness can worsen quickly, so do not remain outdoors while waiting for symptoms to pass.

Tell the clinician where the pain is, your fluid intake, urine changes, heat exposure, recent meals or travel, and any medicines. Ask whether you need testing for dehydration, infection or another stomach condition, and which fluids and foods are suitable for you.