Heat exhaustion is a heat-related syndrome, which ranges in severity from mild heat cramps to heat exhaustion to potentially life-threatening heatstroke.
Signs and symptoms of heat exhaustion often begin suddenly, sometimes after excessive exercise, heavy perspiration, and inadequate fluid or salt intake. Signs and symptoms of heat exhaustion include:
• Feeling faint or dizzy
• Heavy sweating
• Rapid, weak heartbeat
• Low blood pressure
• Cool, moist, pale skin
• Low-grade fever
• Heat cramps
• Dark-colored urine
If you suspect heat exhaustion:
• Get the person out of the sun and into a shady or air-conditioned location.
• Lay the person down and elevate the legs and feet slightly.
• Loosen or remove the person's clothing.
• Have the person drink cool water or other nonalcoholic beverage without caffeine.
• Cool the person by spraying or sponging him or her with cool water and fanning.
• Monitor the person carefully. Heat exhaustion can quickly become heatstroke.
• If fever greater than 102 F (38.9 C), fainting, confusion or seizures occur, call 911 or emergency medical help.