A member asked:

Please what are decongestants? and what is a sinus? thanks a lot

A doctor has provided 1 answer

Sinus air filters: Your sinuses are air filtering chambers, they are behind your cheekbones and behind your forehead and nose. They filter the air that you breathe in and remove allergens. Sometimes when people have allergies or infection the sinuses get very congested. Decongestants are medications that can decrease the congestion in the sinuses.

Answered 1/26/2019

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