Heat exhaustion is a mild form of heat-related illness that can develop after several days of exposure to high temperatures and inadequate fluid intake. Those most prone to heat exhaustion are infants and children up to four years old, elderly people, those with high blood pressure, and those working or exercising in a hot environment.
Symptoms of heat exhaustion may include:
Seek urgent medical attention if symptoms worsen or last longer than one hour. Untreated, heat exhaustion may progress to heat stroke. Seek emergency medical attention or call 911 immediately if symptoms are severe, or the affected person has heart problems or high blood pressure.
Heat stroke is a serious heat-related illness. It occurs when the body becomes unable to control its temperature. Body temperature may rise to 106° F or higher within 10 to 15 minutes. Heat stroke can cause death or permanent disability if emergency treatment is not provided.
Symptoms of heat stroke may include:
If you experience any of these symptoms or notice them in others, get indoors quickly. Apply cool water to the skin and place ice packs on the groin and armpits. Seek immediate emergency medical attention or call 911.