Why does core body temperature initially rise during heatstroke, despite compensatory mechanisms like sweating and vasodilation?

💡 Explanation

During heatstroke, thermoregulatory mechanisms eventually fail because prolonged exposure to high temperatures exhausts the body's capacity to dissipate heat effectively, leading to a rapid increase in core temperature. Therefore, exhaustion of thermoregulatory capacity is the reason, rather than a metabolic rate reduction or hormonal influence initially reversing the core hyperthermia.

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