Mayo Clinic Minute: Heat exhaustion and heatstroke

Your body is like a car's engine. If it starts to overheat, the warning light goes on. And that is heat exhaustion.

Anyone at any age can suffer from heat exhaustion. High temperatures, particularly when paired with high humidity, are the primary cause.

Without prompt treatment, heat exhaustion can lead to heatstroke, a life-threatening condition that requires emergency medical attention.

A common symptom of heatstroke is an altered mental state or behavior.
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