Diagnosis of sinusitis in children: emphasis on the history and physical examination.

Sinusitis can occur as an acute, subacute, recurrent acute, or chronic clinical disease process in children. Sinusitis most often manifests as a prolongation or complication of a viral upper respiratory tract infection. Because children average six to eight upper respiratory tract infections per year, sinusitis is probably a more frequent diagnosis in the pediatric age group compared with adults who average two to three upper respiratory infections per year. Upward of 5 to 13% of children may experience sinusitis, but precise incidence data are not available because many imaging techniques currently available are inappropriate procedures for a prospective pediatric survey. Symptoms of acute sinusitis in children can vary from the more common persistent, purulent rhinorrhea and cough to the less common symptoms of fever, headache, facial pain, and swelling. Recurrent acute and chronic sinusitis may be associated with another condition such as a host-defense defect, cystic fibrosis, asthma, or a local condition that predisposes to obstruction of the sinus ostia such as nasal polyps, deviated septum, foreign body, or allergic inflammation. Diagnosis of sinusitis can be made on the basis of a careful history and physical examination with radiography reserved for confirmation of clinical impression or documentation of disease. Although fiberoptic rhinoscopy is used more frequently as an adjunct in adults for the evaluation and management of sinusitis, more studies need to be performed to document its clinical usefulness in children.