Symptoms of heat exhaustion include:

•nausea,


•vomiting,


•fatigue,


•weakness,


•headache,


•muscle cramps and aches, and


•dizziness.
However, some individuals can develop symptoms of heat stroke suddenly and rapidly without warning.

Different people may have different symptoms and signs of heat stroke. But common symptoms and signs of heat stroke include:

•high body temperature


•the absence of sweating, with hot red or flushed dry skin


•rapid pulse


•difficulty breathing


•strange behavior


•hallucinations


•confusion


•agitation


•disorientation


•seizure


•coma