Nasal Allergy in Tokachi; A Clinical Study / 日本農村医学会雑誌

ABSTRACT

A clinical study was carried out on 336 patients diagnosed with nasal allergic symptoms in Otolaryngological Clinic of Obihiro Kousei Hospital from April 1993 to July 1995. The diagnosis was made based on their history, numbers of eosinophils in the peripheral blood and nasal secretion and the results of the radioallergosorbent test (RAST).<BR>House dust and mites were the most frequent allergens, as reported by almost all clinics in Hokkaido. On the other hand, in this Tokachi district, pollinosis allergens include birch pollinosis in 98 patients (40.8%), orchard grass pollinosis in 66 patients (27.5%), regweed pollinosis in 75 patients (31.6%) and timothy pollinosis in 77 patients (32.1%).<BR>It seems that Pecatnres are due to the local characteristics such as cllimate, geographical features and plant distribution in the Tokachi area.