Infant chronic rhinitis (ICR) is frequently encountered in routine clinical practice in the otorhinolaryngology department, but its detailed pathology is unknown.
In this study, 3396 children aged 6 or younger who initially visited MORI Otorhinolaryngology & Allergy Clinic were analyzed, 82.2% of whom chiefly complained of nasal symptoms. Over 70% of the children presented with a disease duration of up to 2 weeks, as determined based on their medical interviews. Among those, 75.7 to 84.2% were diagnosed as having apparent chronic nasal disease or had symptoms persisting at follow-up visits.
Excluding 639 children diagnosed with perennial allergic rhinitis (PAR) at the initial visits among the 3396 children, we performed a prospective cohort survey in 2757 children. The results demonstrated that children with versus without ICR showed a significantly higher incidence of PAR (
P<0.001). A multivariate analysis revealed that the following variables were significantly correlated with PAR onset; “previous ICR episode” (odds ratio: 7.948;
P<0. 001), male (1.712;
P=0.004), family history of allergy (4.858;
P<0.001), previous history of allergy (10.414;
P<0.001), and positive for eosinophils in the nasal discharge (7.283;
P=0.005).
In addition, 343 of the 364 children with acute otitis media (AOM) had complicating nasal diseases. The majority of these children followed the course of ICR despite a disease duration of 2 weeks or shorter based on their medical interview. Although 87.0% of the children with AOM showed immediate improvement with treatment using antibiotics such as AMPC and CDTR-PI, those complicated with ICR responded poorly to this treatment. Also in the group of children complicated with AOM, the variable “previous ICR episode” was significantly correlated with a higher incidence of PAR (odds ratio: 2.656;
P=0.005).
These results suggest that ICR is essential for the growth-related onset of PAR and constitutes the pathology of PAR.
View full abstract