Fig. 2.

Acute rhinosinusitis. The diagnosis of acute bacterial rhinosinusitis in children is usually made on clinical grounds based on nasal symptoms (nasal drainage, congestion, and cough) and their duration. In the context of an upper respiratory tract infection, most would agree that ABRS can be diagnosed if the symptoms do not resolve within 10 days or worsen after an initial improvement. Some children also present with ABRS without an antecedent URI, and their symptoms tend to be more severe (fever, purulent rhinorrhea, facial pain)