Heat exhaustion is characterized by which finding?

• A. Body temperature above 104°F
• B. Skin is dry and red
• C. Skin is moist, pale, and cool
• D. No sweating

Answer: (C)

Heat exhaustion occurs when the body's cooling mechanisms are overwhelmed but still functioning, so sweating continues and skin feels moist. Moist, pale, and cool skin is a common sign because the person is still sweating and the body’s surface is cool to the touch. They may feel weak, dizzy, or nauseated and have a rapid pulse, but mental status is usually preserved.

In contrast, a very high fever (above 104°F) or skin that is hot and dry suggests heat stroke, where sweating can cease as the body loses its ability to regulate temperature. Absence of sweating is another red flag for heat stroke or severe dehydration in heat exposure.