Abstract
This commentary discusses known links between Exertional Heat Illness (EHI), Malignant Hyperthermia (MH), and other hereditary diseases of muscle. Genetic and functional testing is also evaluated as measures of fitness to return to duty/play. Reviews and research articles from Sports Medicine, Applied Physiology, and Anesthesiology. Detailed comparisons of existing literature regarding clinical cases of EHI and MH and the potential utility of genetic testing, specifically the ryanodine receptor (RYR1) gene and other genes related to disorders of skeletal muscle. EHI is a complex disorder wherein physiological, environmental, and hereditary factors interact to endanger an individual's ability to maintain thermal homeostasis. Individuals' genetic background is likely to play an important role, particularly when EHI recurs. Recurrent EHI has been associated with MH and other genetic disorders, highlighting the importance of identification and exclusion of individuals with known high risk factors.
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