Vasodilation: The outer ear or pinna has a rich blood supply and sometimes, the nerves that dilate (expand) those blood vessels (branches of the vagus nerve) become activated and the blood vessels dilate and give a red color to the pinna and a warm feeling. It is of no clinical significance.
Answered 3/9/2019
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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