PRACTICA OTO-RHINO-LARYNGOLOGICA

Vol. 96   No.12   December　2003

Allergic Rhinitis in Sapporo
                                               

Etsuko Kanaizumi, Yukihiro Somekawa, Hironobu Yamaya, 
Atsushi Kondo and Akikatsu Kataura                                   
(Sapporo General Railway Hospital)

      We reported 587 cases of allergic rhinitis in Sapporo General Railway Hospital between April 1995 and March 2000. Radioallergosorbent tests (RAST) were performed for diagnosis of allergic rhinitis.
      RAST was positive for house dust (HD) in 75.0％ of the patients, 71.8％ for mite, 40.9％ for white birch, 31.6％ for grass, and 21.8％ for mugwort.
      It is known the most common pollinosis allergen in Sapporo was once grass pollen. However, it has been reported that birch pollinosis has been gradually increasing in Sapporo and neighboring areas recently.
      In this study too, the most common pollinosis allergen was birch pollen. RAST was positive in 71％ of all pollinosis patients.

Key words : Sapporo, birch, pollinosis

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