Heatstroke is characterized by a high body temperature, typically 104 F (40 C) or higher, as measured using a rectal thermometer.
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Dehydration increases heat stroke risk, causing headaches, high body temperature, nausea, and rapid breathing. Predisposition to migraines may be triggered by dehydration.
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Muscle cramps indicate overheating, requiring cooling and hydration to prevent serious illnesses. Heatstroke, if untreated, can lead to permanent disability or death.
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Heatstroke, caused by hot weather or strenuous exercise, can cause hot, dry skin, nausea, vomiting, stomach sickness, and vomiting.
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Heat stress can cause rapid and shallow breathing, racing heart rate, and increased pulse due to the significant burden on the heart to cool the body.
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Increased body temperature, like hot showers or exercise, can temporarily decrease myelin conduction through an affected optic nerve, causing temporary visual symptoms.
Source: Freepik
Flushing from exercise or hot environments is usually harmless, but flushed skin with other symptoms, such as difficulty breathing, may indicate heat-related illness.