High body temperature: A core body temperature of 104 F (40 C) or higher, obtained with a rectal thermometer, is the main sign of heatstroke.
Altered mental state or behaviour: Confusion, agitation, slurred speech, irritability, delirium, seizures and coma can all result from heatstroke.
Alteration in sweating: In heatstroke brought on by hot weather, your skin will feel hot and dry to the touch. However, in heatstroke brought on by strenuous exercise, your skin may feel dry or slightly moist.
Racing heart rate: Your pulse may significantly increase because heat stress places a tremendous burden on your heart to help cool your body.
Headache: You might experience a throbbing pain in your head.
Read more about heatstrokes here.
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