A member asked:

What causes congestion when lying down?

A doctor has provided 1 answer
Dr. Mark Loury answered

Specializes in ENT and Head and Neck Surgery

Normal: Up to 70% of the population has the nasal cycle which is alternating congestion as a result of changes in blood flow through the nasal tissues. When we lay down there is an increase in nasal blood flow so that there is about a 20% increase in tissue thickness which will narrow the nasal airway.

Answered 1/27/2020

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