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Topic: Heatstroke
Subject: Medicine
A 72-year-old male is brought to your office by a friend because of increasing confusion, irritability, and difficulty walking. This began shortly after the patients car broke down and he had to walk a mile to get to a phone and call the friend. The temperature outdoors has been near 39.5°C (100°F).
On examination you note a rectal temperature of 39.5°C (103.1°F). His pulse rate is 110 beats/min and his blood pressure is 100/60 mm Hg.
Which one of this patients findings indicates that he has heatstroke rather than heat exhaustion?

A. Confusion

B. Sweating

C. His temperature

D. His heart rate