Abstract
Symptoms of chronic rhinosinusitis (CRS) are cumbersome and refractory to most systemic medications and even after surgical intervention, the recurrence of symptoms are frequent. In order to study the beneficial effects of Origanum vulgare inhaler in releasing the symptoms, this study was conducted at Boo Ali Sina Hospital Sari, Iran. Sixty four patients were recruited and allocated equally in case and control groups matched for age,sex and duration of symptoms.15.6 and 25 percent of cases and controls had history of sinuses surgery. All symptoms including headache,nasal congestion, sinus pain, post nasal discharge, eye pain, purulence in nasal cavity and cough were significantly reduced after the intervention except for hyposmia and nasal discharge(p
