Epidemiological survey of allergic rhinitis in Japan 2019

Abstract

In recent years, the number of patients with allergic rhinitis (AR), including Japanese cedar pollinosis (JCP), has increased. Dr. Baba conducted epidemiological surveys in 1998 and 2008 to investigate the prevalence of AR in Japan, using questionnaires for otolaryngologists and their families. We carried out same questionnaire survey to investigate the changes in the prevalence of JCP, perennial allergic rhinitis (PAR), and pollinosis other than JCP in 2019. The results of our survey revealed a prevalence of AR of 49.2%, and a prevalence of JCP of 38.8%. These rates represented marked increases over the previously recorded results. Furthermore, a marked increase in incidence of JCP was observed in the younger age groups.