What is heat stroke? Heat stroke, also known as a sunstroke is a medical emergency.  Heat stroke is a life-threatening medical condition in which the core body temperature rises up to 104 degree F or more due to the incapability of the body to cope up with the sudden or rapid rise in the temperature in hot climates.  The failure of the body to reduce temperature may result in rapid changes in the body such as unconsciousness, damage to the vital organs or sudden death. Heat stroke is a severe type of heat injury, caused by extreme temperatures or hyperthermia.  Heat exhaustion, heat stroke, heat syncope all are the types of heat injury or hyperthermia. Heat stroke commonly occurs during summer seasons when the temperatures are usually high.  Heavy physical exertion in such hot temperatures may lead to heat stroke in some people.  Due to the insufficiency of the body to bring down the temperature to maintain homeostasis of the body, the symptoms such a...