Heat exhaustion

Heat exhaustion is one condition on the spectrum of raised body temperature derived from a heat illness. Other heat illnesses include heat cramps and heat stroke. Heat exhaustion is caused by the raising of a person's body temperature from either environmental conditions or by exertion. A raised internal body temperature can induce high amounts of perspiration out of the body, which can lead to the loss of water, salt and other electrolytes.^[1][2]

Prevention of any heat-related illness includes avoiding exposure to very hot environments for prolonged periods, such as tropical sunshine in the middle of the day, or a boiler room, and drinking adequate fluids to replace insensible loss through perspiration, avoiding exertion and exercise in hot weather, avoiding medications that can be detrimental to the regulation of body heat, and removing or loosening clothing.^[1][2][3]