Heat syncope
| Heat syncope | |
|---|---|
| A Boy Scout at the 1948 Olympic Games faints in the intense heat | |
| Specialty | Emergency medicine | 
Heat syncope is fainting or dizziness as a result of overheating (syncope is the medical term for fainting). It is a type of heat illness. The basic symptom of heat syncope is fainting, with or without mental confusion. Heat syncope is caused by peripheral vessel dilation, resulting in diminished blood flow to the brain and dehydration.