There are many different types of sinusitis. On the basis of symptom duration, sinusitis may be acute (lasting less 4 weeks), subacute (4 to 12 weeks), or chronic (more than 12 weeks). Nasal polyps may be a feature of certain forms of sinusitis. Other forms of sinusitis, such as aspirin-exacerbated respiratory disease (AERD) and cystic fibrosis (CF), are exceedingly complex and require close collaboration between rhinologists, allergists, and pulmonologists.
Chronic sinusitis, also known as chronic rhinosinusitis (CRS), is a common condition with a significant impact on quality of life. It is estimated that 12-15% of the population is afflicted by CRS, and many patients may not be aware that they have, since symptoms can mimic those of other conditions, such as allergic rhinitis (nasal allergies), migraines, etc. Symptoms of CRS include facial pain or headache; decreased sense of smell; nasal congestion; and/or a runny nose or postnasal drip.
RECURRENT ACUTE SINUSITIS
Four or more sinus infections per year could be a sign of recurrent acute rhinosinusitis (RARS). In these cases, it is often necessary to look for and identify the presence of underlying allergies, immunodeficiencies, or anatomic variations in sinus anatomy that can make it easier for a simple viral infection to progress to a more serious bacterial sinusitis.
OTHER FORMS OF SINUSITIS
Other forms of sinusitis include allergic fungal sinusitis (AFRS), aspirin-exacerbated respiratory disease (AERD), sinusitis related to dental infections, and sinusitis related to autoimmune disorders such as Wegener granulomatosis.