A member asked:

Dizzy, weak, and nauseous when exposed to heat. what could be wrong?

A doctor has provided 1 answer
Dr. Hashmat Rajput answered

Specializes in Internal Medicine

Heat exhaustion: The above symptoms are caused by dehydration as you lose the water through perspiration. This cause hypovolemia . Some people not only get dizzy but they even pass out, which is known as syncope. Please read- killer heat; http://doctorrajput.Com thanks.

Answered 12/9/2013

4.9k views

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