Introduction: Nasal Obstruction Symptom Evaluation score is a simple method to assess the severity of the symptoms of Allergic Rhinitis. This study is done to know the effect of Nasal corticosteroid spray in Allergic Rhinitis in relation to N.O.S.E score & Absolute Eosinophil Count. Material & Method: This prospective observational study was conducted in patients of Allergic Rhinitis visiting ENT & HNS Department, KLES Dr. Prabhakar Kore Hospital & Medical Research Centre, Belgaum for 1 year. A total of 50 patients were included in study after obtaining the informed consent. All the patients were assessed by severity of symptoms with N.O.S.E score with AEC before & after treatment with intranasal corticosteroid spray & was followed up after 3 months. Result: The mean age of patients is 32.48±12.77, with 40% female participants and 60% were male participants. The male to female ratio in 1.5:1, with male preponderance. The NOSE score was found to be significantly higher before treatment (47.1±1.56) compared to after treatment (16.40±0.85), with p