Signs of Heat Exhaustion
7. Fainting
Heat syncope is another common sign of heat exhaustion. It is most commonly associated with exertion in hot temperatures and inadequate blood flow to the brain, which can result in a sudden loss of consciousness. Fainting can also occur when patients are sitting for long periods and then suddenly rise, or when they are standing without moving for an extended period. These fainting spells typically occur in people who are not properly acclimated to the warmer temperatures.
As a lack of adequate blood supply to the brain is a major contributing factor to fainting, it is necessary to stay hydrated. Dehydration has a direct correlation with total blood volume. Without adequate blood volume, people are predisposed to syncope or fainting spells. Therefore, drink enough water during hot days. In fact, it is likely wise to drink more than the recommended eight glasses, especially if you will be working outside.
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