Meningitis: Most of what people would call a sinus infection is a cold. It's generally unnecessary to use an antibiotic for symptoms lasting 10 to 14 days. If you start getting worse after 10 days, or get neck stiffness, significant pain , green drainage before that you may have a sinus infection. Sudden pain over a sinus is frequently migraine. Waiting longer can lead to a chronic problem, brain abscess, .
Answered 3/22/2020
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