Why does heat stroke, rather than heat exhaustion, frequently result when an elderly person takes anticholinergic medications during a heat wave?

💡 Explanation

Anticholinergic medications block acetylcholine receptors on sweat glands, thus inhibiting perspiration—the primary thermoregulation mechanism for dissipating heat during exertion. Because sweat production is reduced, the body is less able to cool itself, therefore heat stroke becomes more likely, rather than heat exhaustion which involves less severe fluid and electrolyte losses.

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