BACKGROUND Chronic Rhinosinusitis (CRS) is a prevalent medical disorder encountered in Otorhinolaryngology practice that has both personal and economic impact. It leads to significant patient morbidity in terms of quality of life and decreased overall productivity. Therefore, it becomes very important to understand the clinical profile of CRS patients so that proper treatment model can be advised. In this study, attempt has been made to identify the clinical profile of patients with CRS who attended Department of Otorhinolaryngology, Medical College Hospital, Thiruvananthapuram, during a period of 1 year from April 2014-April 2015. The aim of this study is to study the clinical profile of patients with chronic rhinosinusitis and to study the clinical profile of patients with chronic rhinosinusitis and to decide on treatment; to find out the prevalence of fungal sinusitis among chronic rhinosinusitis in population and identify the commonest strain of fungus. MATERIALS AND METHODS 314 patients with symptoms of Chronic Rhinosinusitis were included over a period of 1 year. Demographic data, Symptomatology and Clinical signs were recorded; 3 months treatment given and later the endoscopic features and CT scan observed. Patients with persistent disease were operated upon with FESS, operative notes recorded. Per-operative polyps, fungal, mucin were subjected to HPE and fungal culture. RESULTS Out of 314 patients, 164 were females (52%) and 150 were males (48%). The commonest age group was 21-50 years. The commonest symptoms were Nasal block 57%, Nasal discharge 58% and Facial congestion 59%; 80% of the patients needed FESS. Operative findings included 46% had oedematous mucosa, 33.4% had polyp and 1.6% patients had fungal debris alone. Aspergillus Sp was the commonest fungus. CONCLUSION The mean age of Chronic Rhinosinusitis was 40 years having equal distribution among males and females. Common presenting symptoms were headache, nasal discharge and nasal obstruction. Anatomical variations like deviated nasal septum can predispose to chronic rhinosinusitis. Surgery plays a significant role in the management of refractory cases of chronic rhinosinusitis.