Heat cramps are muscle spasms that result from loss of large amount of salt and water through exercise. Heat cramps are associated with cramping in the abdomen, arms and calves. This can be caused by inadequate consumption of fluids or electrolytes. Frequently, they don't occur until sometime later, especially at night or when relaxing. Heavy sweating causes heat cramps, especially when the water is replaced without also replacing salt or potassium.
Although heat cramps can be quite painful, they usually don't result in permanent damage. In order to prevent them, one may drink electrolyte solutions such as sports drinks during exercise or eat potassium-rich foods like bananas, & apples
Heat cramps are a type of heat illness.
- Auerbach Paul S Wilderness Medicine. 4th ed. St. Louis, Mo: Mosby; 2001:240-316.
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