THE PREVALENCE OF ALLERGIC RHINITIS AMONG ASTHMATIC PATIENTS IN TWO DIFFERENT SEASONS

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  • Kamijo Atsushi
    Department of Otorhinolaryngology, Saitama Medical University:Allergy Center, Saitama Medical University
  • Soma Tomoyuki
    Department of Respiratory Medicine, Saitama Medical University:Allergy Center, Saitama Medical University
  • Uchida Yoshitaka
    Department of Respiratory Medicine, Saitama Medical University:Allergy Center, Saitama Medical University
  • Araki Ryuichiro
    Community Health Science Center, Saitama Medical University
  • Kobayashi Takehito
    Department of General Internal Medicine, Saitama Medical University:Allergy Center, Saitama Medical University
  • Inoue Hitoshi
    Department of Otorhinolaryngology, Saitama Medical University
  • Komiyama Kenichiro
    Department of Respiratory Medicine, Saitama Medical University:Allergy Center, Saitama Medical University
  • Tokuyama Kenichi
    Department of Pediatrics, Saitama Medical University:Allergy Center, Saitama Medical University
  • Kase Yasuhiro
    Department of Otorhinolaryngology, Saitama Medical University:Allergy Center, Saitama Medical University
  • Nagata Makoto
    Department of Respiratory Medicine, Saitama Medical University:Allergy Center, Saitama Medical University

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Other Title
  • 気管支喘息患者における鼻炎の合併率 : 季節による変動
  • キカンシ ゼンソク カンジャ ニ オケル ビエン ノ ガッペイリツ : キセツ ニ ヨル ヘンドウ

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Abstract

Introduction: Allergic rhinitis and asthma are often comorbid, and allergic rhinitis has been shown to be a risk factor for asthma in adults and children. Recently, the prevalence of allergic rhinitis among bronchial asthma (BA) patients was reported to be 67.3% in Japan. However, seasonal variation in the prevalence of rhinitis in Japan remains unclear. Objectives and Methods: To investigate the seasonal differences in comorbid allergic rhinitis among asthmatic patients, a survey of BA outpatients aged six years and older was conducted at the Allergy Center, Saitama Medical University. In total, 150 patients (mean age, 43.8 ± 21.8 years old) in summer 2012 and 181 patients (mean age, 48.7 ± 18.3 years old) in spring 2013 completed the Self Assessment of Allergic Rhinitis and Asthma (SACRA) questionnaire. Results: The prevalence of allergic rhinitis in BA patients was 50% in the summer of 2012 and 85.6% in the spring of 2013, indicating a significant seasonal variation. Control of asthma was significantly poorer in both seasons in patients with rhinitis compared to those without rhinitis. Furthermore, in patients with moderate/severe-persistent rhinitis, control of asthma was significantly worse than in patients with mild-intermittent rhinitis in spring 2013, but not in summer 2012. Conclusion: Although the comorbidity rate of rhinitis among BA patients was greater in the spring than in the summer, rhinitis is thought to be closely related with asthma control regardless of the season.

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