Heat exhaustion is more severe than heat cramps Heat Cramps . Fluids and salts are more depleted, and symptoms are more severe. Heat exhaustion may progress to heatstroke Heatstroke if people continue to be exposed to excessive heat.
Symptoms of Heat Exhaustion
Symptoms of heat exhaustion tend to be vague and similar to the symptoms of many other illnesses. People may not realize that their symptoms are related to the heat. Symptoms include
Muscle cramps may occur but often do not. People may feel faint or even lose consciousness when standing. Drenching sweats are common. The heart rate and breathing rate may become rapid. Blood pressure may become low.
Diagnosis of Heat Exhaustion
Symptoms and a history of exposure to heat
Heat exhaustion usually is diagnosed on the basis of the symptoms and occurrence after exposure to heat. Laboratory tests may be needed if doctors suspect a diagnosis other than heat exhaustion, or sometimes to measure the levels of sodium in the blood of people who may have drunk too much plain water.
Treatment of Heat Exhaustion
Rest in a cool environment
Replace fluids and salts
Treatment of heat exhaustion involves rest (stopping activity), removing people from the hot environment, and replacing fluids and salts, either by mouth (with a sports drink or a solution of about 1 to 2 quarts of water containing 2 teaspoons of salt) or intravenously. Removing or loosening clothing and wetting the skin or applying wet cloths can also aid cooling.
After receiving fluids, people usually recover rapidly and fully.