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Heat stroke is caused by excessive and prolonged exposure to high temperatures or by physical activity in hot weather. The definition of heat stroke is when your body temperature reaches 104 degrees F or higher. High humidity, health issues, and some medications may increase your risk of heat stroke. It is more common in children and the elderly.
Heat stroke is the progression from heat exhaustion. Symptoms include heavy sweating, nausea, light-headedness, and feeling faint.
Heat stroke occurs if your body temperature continues to rise, and emergency treatment is needed. If left untreated, heat stroke can cause damage to your brain, heart, kidneys, and muscles. A delay in treatment can cause serious injury or death.
-- Answer from Dr. Kay N., a physician on JustAnswer.
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