CATEGORIES:

1. Infectious
2. Non-Infectious:
1. Allergic, including the issue of local tissue IgE synthesis
2. Non-Allergic...
1. NARES: Non-Allergic Rhinitis with Eosinophilia
2. Irritational, including occupational
3. Drug-Induced: topical decongestants, several blood pressure medications, aspirin....
4. Vasomotor
5. Atrophic
6. (Ideopathic): Chronic Rhinitis/Sinusitis/Nasal  Polyposis, with or with or without aspirin sensitivity

Allegra, Clarinex, Zyrtec,  Nasalcrom, Nasal steroids, Saline, Leukotriene Inhibitors, Astelin, Robitussin, Atrovent, (Aspirin), Immunotherapy/Immunomodulation

High prevalence; frequently complicated by acute and chronic sinusitis; frequently complicates and is associated with serious bronchial asthma - through reflex mechanisms, direct bacterial seeding, and probably same pathogenesis.

Treat aggressively, for symptom relief and to avoid lower as well as upper  respiratory tract complications.  NOTHING TO SNEEZE AT!