Sinusitis 

Classification

Predispoing factors

Etiologic agents 

Noninfectious

Physiology/Normal function

The paranasal sinuses, although directly connected to the nasal passages, which are colonized with bacteria,  are themselves sterile under normal conditions. 

Anatomy of the sinuses 

Pathogenesis 

Clinical Features

Complications and long-term consequences 

Diagnosis

Therapy 

Symptomatic therapy

Decongestants, Topical steroids and mucoevacuants are of no proven value.

Prevention