Clinical diagnosis
Consider CT only for toxic patients (to rule-out complication)
Highlights identifying factors for acute bacterial vs. viral rhinosinusitis
Concern for bacterial (treat with antibiotics) if any of these:
Purulent discharge and pain on face or teeth > 10 days without improvement
Severe symptoms or fever > 39 plus symptoms > 3 days
"Double sickening" -<unk>  symptoms at end of initially improving URI that lasted > 5 days
Purulent discharge and pain on face or teeth > 10 days without improvement
Severe symptoms or fever > 39 plus symptoms > 3 days
"Double sickening" -<unk>  symptoms at end of initially improving URI that lasted > 5 days
Sinusitis
Upper respiratory infection, influenza
Laryngitis
Mastoiditis
Juvenile nasopharyngeal angiofibroma
Croup
Nasal polyp
Pharyngitis