## Overview Paranasal sinusitis is inflammation or infection of one or more sinuses. Primary sinusitis follows upper-respiratory infection and responds to antibiotics and lavage. Secondary sinusitis is caused by tooth-root infection, cysts, or other lesions and requires treatment of the underlying problem. Unilateral nasal discharge is the hallmark. ## Causes Bacterial infection (primary) or extension from dental disease or cysts (secondary). ## Diagnosis Endoscopy, imaging, and oral examination. ## Treatment Systemic antibiotics and sinus lavage for primary disease. Address the primary lesion for secondary sinusitis. ## Recovery and Prognosis Good for primary sinusitis. Depends on the underlying cause for secondary cases. ## Prevention Dental care and prompt treatment of respiratory infections.
unilateral nasal discharge; facial swelling; dull sinus percussion; possible fever
## Overview Paranasal sinusitis is inflammation or infection of one or more sinuses. Primary sinusitis follows upper-respiratory infection and responds to antibiotics and lavage. Secondary sinusitis is caused by tooth-root infection, cysts, or other lesions and requires treatment of the underlying problem. Unilateral nasal discharge is the hallmark. ## Causes Bacterial infection (primary) or extension from dental disease or cysts (secondary). ## Diagnosis Endoscopy, imaging, and oral examination. ## Treatment Systemic antibiotics and sinus lavage for primary disease. Address the primary lesion for secondary sinusitis. ## Recovery and Prognosis Good for primary sinusitis. Depends on the underlying cause for secondary cases. ## Prevention Dental care and prompt treatment of respiratory infections.
unilateral nasal discharge; facial swelling; dull sinus percussion; possible fever