There is an enormous economic burden of patients suffering from chronic rhinosinusitis (CRS), there is also significant patient morbidity in terms of quality of life and decreased overall productivity caused by CRS. But, the criteria's to label a patient having CRS is not clearly defined. The definition of CRS is ever evolving. The purpose of this study was to evaluate the diagnosis of CRS according to recent clinical guideline set by the AAO-HNS and to determine the utility of nasal endoscopy for diagnosing the CRS.