Dec 24, 11 · No, a bacterial sinus infection cannot grow into a brain infection, it is impossible As for antibiotic treatment of a sinus infections, the doctor will take that $50 for the checkup, thank you very much, and tell you to go home He may prescribe you a saline water treatment that you can buy OTC without a doc, or you can make yourselfJul 19, · Sinus infections (sinusitis) is when cavities around the nasal passages become inflamed They make mucus, which keeps the inside of your nose moist That, in turn, helps protect against dustAcute bacterial rhinosinusitis (ABRS) is an infection of both your nasal cavity and sinuses It is caused by bacteria ABRS sets in when your nasal cavity and sinuses first become inflamed from another cause, often a viral infection You might have symptoms such as face pain and fever 1 Sinus infection mucus in nose