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What could cause someone to black-out in the shower?

1 doctor weighed in
Dr. Robert Kwok
Pediatrics

In brief: Maybe it got hot

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: Maybe it got hot

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
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