5 doctors weighed in:
What does the term heat syncope mean?
5 doctors weighed in

Dr. Robert Kwok
Pediatrics
3 doctors agree
In brief: Overheats and faints
A person who gets overheated will automatically dilate (widen) the blood vessels in his skin so that more blood will flow to the skin.
His body does this in hopes of cooling him down, just like the elephant who sends more blood to his ears to cool his body down. The person, however, feels lightheaded and may faint because there is not enough blood flowing his brain (too much blood is in the skin).

In brief: Overheats and faints
A person who gets overheated will automatically dilate (widen) the blood vessels in his skin so that more blood will flow to the skin.
His body does this in hopes of cooling him down, just like the elephant who sends more blood to his ears to cool his body down. The person, however, feels lightheaded and may faint because there is not enough blood flowing his brain (too much blood is in the skin).
Dr. Robert Kwok
Dr. Robert Kwok
Thank
Dr. Pedro Hernandez
Internal Medicine - Geriatrics
1 doctor agrees
In brief: Heat exhaustion
Any person having syncope while exposed to the sun or warm temperatures.
This is associated to the vasodilation, to the perspiration o lack of perspiration, associated to dehydration, fasting, or to exertion. If severe could cause signs of stroke then called heat-stroke.

In brief: Heat exhaustion
Any person having syncope while exposed to the sun or warm temperatures.
This is associated to the vasodilation, to the perspiration o lack of perspiration, associated to dehydration, fasting, or to exertion. If severe could cause signs of stroke then called heat-stroke.
Dr. Pedro Hernandez
Dr. Pedro Hernandez
Thank
Get help from a real doctor now
Dr. Steven Seres
Board Certified, Internal Medicine
17 years in practice
497K people helped
Continue
107,000 doctors available
Read more answers from doctors