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heat exhaustion

heat exhaustion occurs when you can't sweat enough to cool your body. it can develop when you work or exercise in hot weather and don't drink enough liquids to replace the fluids you lose from sweating a lot. heat exhaustion can be caused by loss of fluid (dehydration) or loss of electrolytes.

symptoms of heat exhaustion include fatigue, weakness, headache, dizziness, and nausea. also, the skin is pale, cool, and moist.

mild heat exhaustion may sometimes cause fainting. but it doesn't cause a change in your mental alertness and usually can be treated at home.

moderate to severe heat exhaustion can sometimes lead to heatstroke, which requires emergency treatment.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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