Sinus drainage: Pet hair is a strong allergen and can provoke significant sinus drainage and congestion. Cigarette smoke also can act as an allergen but has a direct irritative effect to the nasal mucosa and can cause drainage as well. Both of these can cause significant drainage.
Answered 9/28/2018
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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