With the recent progress in knowledge of immunology, there is a trend towards increase in interest in allergy and research for allergic rhinitis is also increasing in otolaryngological fields. Allergic rhinitis shows characteristic symptoms of watery rhinorrhea, nasal obstruction, sneezing and itching sensation. It is caused by hypersensitivity to inhalants or food allergens. Climatic changes in temperature and humidity, variations in anatomical structures of nasal cavity and emotional stress all play a role as contributing factors. The author performed clinicostatistical analysis of 104 patients who had visited the Dept. of Otolaryngology, Korea University Hospital presenting symptoms of allergic rhinitis during the period between May 1982 to Aug. 1983. The results were obtained and summarized as follows ; 1) The ratio between male and female was 1 : 1.1 and the largest incidence was in the 2nd decade(30.7%) and the next was in the 3rd decade(27.9%). 2) Rhinoscopic findings showed 29.6% with swelling of inferior concha, 22.1% with nasal septal deviation with swelling of inferior concha and 18.3% with only nasal septal deviation. 3) Radiologic examination of the paranasal sinuses showed normal findings in 45.2%, mild mucosal hypertrophy in 22.1%, moderated mucosal hypertorphy in 15.4%, and marked haziness of the sinus cavity in 17.3%. Unilateral sinusitis was present in 19 patients(18.3%) while bilateral sinusitis was present in 38 patients(36.5%). 4) Classification according to seasonal changes showed the highest incidence occurring during the winter. Also, symptoms were found to occur most frequently in the morning. 5) Hematologic studies showed normal findings for eosinophil in 39.4%, eosinophilia in 60.4% and severe increase for eosinphil(above 10% among WBC) in 8.7%. 6) Skin tests were positive in 57.5% and negative in 42.3%. The most common antigens were in the following order ; D. farinae 33.6%, House Dust 19.5%, Silk 8.8%.