What Is a Sinus Infection?

A sinus infection is bacterial or viral. It causes inflammation of the sinuses and a buildup of mucus. Symptoms include cough, fatigue, fever, stuffy nose, headache, and pressure behind the eyes.

Treatment includes drinking plenty of fluids, medications, using saline solutions to clear sinuses, and using a humidifier. Common drug classes used to treat a sinus infection are antihistamine / sudafed combinations, penicillin antibiotic / beta lactamase inhibitor combinations, quinolone antibiotics, macrolide antibiotics, and cephalosporin antibiotics.