A member asked:

What causes your surroundings to get extremely bright when lightheaded? why does it happen? is it a warning before fainting?

A doctor has provided 1 answer
Dr. Felix Brizuela answered

Specializes in Neurology

Yes: Your visual center is in the back of your brain, and it is very sensitive to drops in oxygen. You can either have extreme brightness, or darkness.

Answered 9/29/2016

3.8k views

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