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Table 1. Diagnostic Criteria for ARS
Acute Rhinosinusitis (ARS) Adult
Sinonasal inflammation lasting less than 4 weeks associated with the sudden onset of
symptoms. Symptoms must include both:
• nasal blockage/obstruction/congestion OR nasal discharge (anterior/posterior)
AND
• facial pain/pressure OR reduction/loss of smell
Radiolog y and endoscopy are not required for diagnosis
Acute Rhinosinusitis (ARS) Pediatric
Sinonasal inflammation lasting less than 12 weeks associated with the sudden onset of
symptoms. Symptoms must include two or more of the following :
• nasal blockage/obstruction/congestion
• discolored nasal discharge (anterior/posterior)
• cough (daytime and night-time)
Radiolog y and endoscopy are not required for diagnosis
Recurrent Acute Rhinosinusitis (RARS)
Four or more episodes of ARS per year with distinct symptom-free intervals between
each episode. Each episode must meet the above criteria for ARS
Acute Exacerbation of Chronic Rhinosinusitis (AECRS)
Sudden worsening of CRS symptoms with a return to baseline symptoms, oen aer
treatment
Diagnosis
Table 2. Diagnostic Criteria for CRS
Greater than or equal to 12 weeks of:
Two or more of the following symptoms:
• Nasal discharge (rhinorrhea or post-nasal drip)
• Nasal obstruction or congestion
• Hyposmia
• Facial pressure or pain
• Cough (in Pediatric CRS)
AND
One or more of the following objective findings:
• Evidence of inflammation on nasal endoscopy or computed tomography
• Evidence of purulence coming from paranasal sinuses or ostiomeatal complex
AND
CRS is divided in to CRSsNP or CRSwNP based on the presence or absence of nasal polyps
