Is heat stroke fatal if left untreated?

Heat Stroke! Can be Fatal! Heat stroke is the most serious form of heat injury and is considered a medical emergency. If you suspect that someone has heat stroke -- also known as sunstroke -- call an ambulance immediately and give first aid until paramedics arrive. http://www.webmd.com/a-to-z-guides/heat-stroke-symptoms-and-treatment#1.

Related Questions

Is heat stroke fatal if left untreated? How many people are brain damaged and institutionalized by it?

Yes. Heat stroke is fatal if left untreated. The 2nd part of your question is far more difficult. It depends on what geographic area and time period you're investigating. The rapidity of recognition and treatment are also key variables. Read more...