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Definitions and Epidemiology

Heat illnesses exist on a spectrum of seriousness. An athlete need not experience symptoms of mild then moderate then severe heat illness to have heat stroke. The exact epidemiology is poorly defined and varies widely dependent on the study population and environmental conditions.

Definitions, pathogenesis, clinical presentations, and key principles of treatment of heat-related illnesses are summarized in Table 38-1.1–8

Table 38-1. Heat-Related Illnesses

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