1 doctor weighed in:

Why does skin turn blue when cold?

1 doctor weighed in

In brief: Blood vessels

When you are cold, blood vessels constrict and cause decreased blood flow distal to them. The decreased blood and oxygen content can then make the skin appear blue.

In brief: Blood vessels

When you are cold, blood vessels constrict and cause decreased blood flow distal to them. The decreased blood and oxygen content can then make the skin appear blue.
Dr. Roman Bronfenbrener
Dr. Roman Bronfenbrener
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