What is the difference between heat exhaustion and heat stroke.

Heat exhaustion and heat stroke are heat-related illnesses.

In heat exhaustion, the body temperature may be high, but not above 104 F (40 C), and medical treatment may be necessary.  The most common signs and symptoms of heat exhaustion include: Confusion; Dark-colored urine (a sign of dehydration); Dizziness; Fainting; Fatigue; Headache; Muscle or abdominal cramps; Nausea, vomiting, or diarrhea; Pale skin; Profuse sweating; and/or Rapid heartbeat.

While with Heat stroke (also called heatstroke, sunstroke, or sun stroke) is a life-threatening medical emergency.  The most common signs and symptoms of a heat stroke include:   Throbbing headache; Dizziness and light-headedness; Lack of sweating despite the heat; Red, hot, and dry skin; Muscle weakness or cramps; Nausea and vomiting; Rapid heartbeat, which may be either strong or weak; Rapid, shallow breathing; Behavioral changes such as confusion, disorientation, or staggering; Seizures; and/or Unconsciousness.

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