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July 11, 1903


JAMA. 1903;XLI(2):108. doi:10.1001/jama.1903.04470040036022

The two conditions of sunstroke and heat exhaustion, though occurring from similar or identical causes, are not the same. In heat exhaustion the temperature is only slightly elevated, and may be subnormal, while in sunstroke it is usually well above 103 degrees. Correspondingly, the skin is comparatively relaxed and cool in heat exhaustion, while it is hot and flushed in sunstroke. Unconsciousness and convulsions are rare in heat exhaustion, but are common in sunstroke. Corresponding to the condition of the temperature, the pulse in heat exhaustion is rapid, feeble and perhaps almost imperceptible, but in sunstroke, although it is rapid, and may be feeble, it may also be full. The pulse, therefore, can not in all cases give much assistance. If further evidence is necessary to establish a diagnosis, there may be the history of the patient having complained, in heat exhaustion, of suffering from intense heat, or if he

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