Acute Bacterial Rhinosinusitis in Children and Adults

Onset with “persistent” symptoms or signs compatible with acute rhinosinusitis, lasting for ≥10 days without any evidence of clinical improvement. (SR, )

Onset with “severe” symptoms or signs of high fever (≥39ºC or 102ºF) and purulent nasal discharge or facial pain lasting for at least 3-4 consecutive days at the beginning of illness. (SR, )

Onset with “worsening” symptoms or signs characterized by the new onset of fever, headache or increase in nasal discharge following a typical viral URI that lasted 5-6 days and were initially improving (“double-sickening”). (SR, )