The brain carries a temperature regulator that keeps the body near a healthy 98°F. But prolonged exposure to extreme heat may confuse this natural thermostat. Remember: When body temperature goes way out of line, trouble isn’t far behind.
Intense heat may cause excessive fluid loss through sweating (heat
exhaustion). If the body isn’t cooled, sweating eventually stops, but the body’s
temperature may keep rising until vital organs begin to fail (heat
Even severe heat stress can appear suddenly, so learn the warning signs and how to treat them.
Mild: Heat Cramps
Core body temperature stays at 98.6°F (37°C). It isn't dangerous unless the symptoms aren't treated. Signs and symptoms include:
Treatment: Get medical advice and do the following:
Moderate: Heat Exhaustion
Core body temperature may rise up to 101°F (38.3°C). It should be treated right away. Signs and symptoms include:
Treatment: Get medical treatment! You may be told to:
Severe: Heat Stroke
This is a serious, life-threatening medical emergency. Core body temperature can rise to 105°F (40.5°C) or more. If not treated right away, heat stroke can lead to permanent brain damage and even death. Signs and symptoms include:
Treatment: Someone should call for emergency help right away. While waiting for emergency help, the affected person should:
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