Overview

Heatstroke is a condition caused by your body overheating, usually as a result of prolonged exposure to or physical exertion in high temperatures. This most serious form of heat injury, heatstroke, can occur if your body temperature rises to 104 F (40 C) or higher. The condition is most common in the summer months.

Heatstroke requires emergency treatment. Untreated heatstroke can quickly damage your brain, heart, kidneys and muscles. The damage worsens the longer treatment is delayed, increasing your risk of serious complications or death.

Aug. 15, 2017
References
  1. Heat stress-heat related illness. Centers for Disease Control and Prevention. https://www.cdc.gov/niosh/topics/heatstress/heatrelillness.html. Accessed June 15, 2017.
  2. Extreme heat. Ready Campaign. https://www.ready.gov/heat. Accessed June 15, 2017.
  3. O'Connor FG, et al. Exertional heat illness in adolescents and adults: Epidemiology, thermoregulation, risk factors, and diagnosis. https://www.uptodate.com/contents/search. Accessed June 15, 2017.
  4. Mechem CC. Severe nonexertional hyperthermia (classic heat stroke) in adults. https://www.uptodate.com/contents/search. Accessed June 15, 2017.
  5. Extreme heat: A prevention guide to promote your personal health and safety. Centers for Disease Control and Prevention. https://www.cdc.gov/disasters/extremeheat/heat_guide.html. Accessed June 15, 2017.
  6. Ferri FF. Heat exhaustion and heat stroke. In: Ferri's Clinical Advisor 2017. Philadelphia, Pa.: Elsevier; 2017. https://www.clinicalkey.com. Accessed June 15, 2017.
  7. Laskowski ER (expert opinion). Mayo Clinic, Rochester, Minn. June 19, 2017.