Rhinitis: Rhinitis is a common cause for nasal congestion and post nasal drip. Allergic rhinitis to dust mite can cause increased symptoms while sleeping on a dust mite infested pillow and matteress. Pillow and matteress covers can be used to decrease exposure. Vasomotor rhinitis can also lead to increased nasal congestion while head is in the supine position during sleep as well as post nasal drip.
Answered 4/24/2015
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