Heat exhaustion signs and symptoms can include heavy perspiration; nausea; lightheadedness; severe thirst; dilated pupils; and red or pale, cool skin.
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Heat Exhaustion, First Aid 

Picture of Heat Exhaustion, First Aid: Heat exhaustion signs and symptoms can include heavy perspiration; nausea; lightheadedness; severe thirst; dilated pupils; and red or pale, cool skin. Divider line
Heat exhaustion signs and symptoms can include heavy perspiration; nausea; lightheadedness; severe thirst; dilated pupils; and red or pale, cool skin.
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Who's At Risk
People most susceptible to heat exhaustion are those who are outdoors on a hot, humid day or those inside in a poorly ventilated area, particularly children, the elderly, or the obese. Children and the elderly show the fastest progression of symptoms and can collapse suddenly.

Those on certain medications can suffer from heat illness, as well, as medications can alter the way the body handles heat and sun. Those who drink alcohol before, during, or after vigorous activity are more susceptible to heat illness, as are people who work or exercise excessively, coupled with profuse perspiration and inadequate fluid intake.

Even those in excellent health can have heat illness if early symptoms are ignored.
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Last Modified: 22 Dec 2008
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