Background: Recent epidemiological studies have suggested that some patients with Kawasaki disease (KD) have an atopic tendency. However, it is not clear what the long-term prognosis will be for KD-patient with allergic disease. We aim to investigate the long-term prognosis of KD-patient with allergic disease.
Subjects & Methods: We studied a cohort of KD-patient (n=58, follow-up age; 9.95±1.84 years), in whom we examined total serum IgE and specific IgE at KD-onset (onset age; 2.13±1.84 years). Using retrospective patient medical record analysis, we evaluated the prevalence of bronchial asthma at onset and follow-up of KD. In addition, we examined the hospitalization rate, medical history and family history in pediatric bronchial asthma after KD-onset.
Results: In our study, KD-patient had markedly higher total serum IgE and prevalence of bronchial asthma at onset of KD than the general children’s population, as reported by Japanese national government (Table 1). The prevalence of bronchial asthma at follow-up was similar to the general children’s population. 9 children had already had a diagnosis of a bronchial asthma at KD-onset. 8 children had subsequently developed bronchial asthma after KD-onset. In these 2 groups, however, 6 and 8 children, respectively, had remitted during follow-up. Nobody was hospitalized for asthmatic exacerbation after KD-onset.
Conclusions: These findings demonstrate that KD-patient with atopic bronchial asthma at onset have not developed severe allergic reaction. There results provide that the pathogenic mechanism of KD might weakly or transiently provoke an elevation of total IgE and the developing of allergies.