A member asked:

How do i know if i have a bacterial or a viral sinus infection?

A doctor has provided 1 answer

Time: The only real sign that has proven predictive of a bacterial sinus infection vs a viral sinus infection is the length of time of symptoms (that was reported to be 10 days). Initially it is usually a viral infection and then a secondary bacterial infection occurs (7-10 days later). That is why most physicians usually recommend otc meds and conservative measure in the beginning.

Answered 9/28/2016

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