Stroke due to Heat Underlying Cause
The primary cause of heatstroke is exposure to a hot environment. A hot environment or intense exercise elevates the body temperature, and the body is unable to release the heat fast enough to keep the body temperature in a normal range. As a result, the body temperature rises so high that the brain malfunctions.
Factors that worsen heatstroke include:
- Booker RJ, Bricknell MC. Heat illness--recent developments. J R Army Med Corps. 2002 Mar;148(1):11-8. 
- Bytomski JR, Squire DL. Heat illness in children. Curr Sports Med Rep. 2003 Dec;2(6):320-4. 
- Coris EE, Ramirez AM, Van Durme DJ. Heat illness in athletes: the dangerous combination of heat, humidity and exercise. Sports Med. 2004;34(1):9-16. 
- Lugo-Amador NM, Rothenhaus T, Moyer P. Heat-related illness. Emerg Med Clin North Am. 2004 May;22(2):315-27, viii.