High Body Temperature is the first and major sign of heat stroke
Because the body's thermoregulatory system is overwhelmed
Another common symptom is that when the body overheats, the heart rate also increases.
This is due to the dilation of blood vessels in the brain.
During heat stroke vomiting can be caused by the body's response.
Due to the high body temperature effects, confusion can also occur.
Due to the brain's abnormal electrical activity seizures can occur also.