ArticleThe Journal of allergy and clinical immunology2025
Rhinoconjunctivitis symptoms in children and adolescents with asthma: Longitudinal clustering analysis.
Article in The Journal of allergy and clinical immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundRhinoconjunctivitis phenotypes are conventionally described on the basis of symptom severity, duration and seasonality, and aeroallergen sensitization. It is not known whether these phenotypes fully reflect the patterns of symptoms seen at a population level.
objectiveWe sought to identify phenotypes of rhinoconjunctivitis on the basis of symptom intensity and seasonality using an unbiased approach and to compare their characteristics.
methodsA cohort of children with asthma in low-income urban environments was prospectively followed with a rhinoconjunctivitis activity questionnaire, and their upper and lower airway disease was managed for 12 months with every 2-month visit based on standardized algorithms. We identified individual rhinoconjunctivitis symptom trajectories and clusters of those trajectories and compared the clusters focusing on atopic characteristics.
resultsData obtained from 619 children yielded 5 symptom clusters: 2 had high symptoms (22.5%) but differed in seasonal pattern, 1 had medium symptoms (13.6%), 1 had medium nasal congestion only (20.4%), and 1 had low symptoms (43.6%). The latter was further split into 2 subgroups if nasal corticosteroids were frequently prescribed (23.6%) or not (20.0%). Seasonal variation was absent in the low symptom clusters. The number of allergic sensitizations and family history of allergic airway disease were higher in the high symptom clusters, but allergic sensitization did not explain differences in seasonality.
conclusionsThis study identified rhinoconjunctivitis phenotypes that have not been previously reported and were not differentiated by demographics or by measures of atopy and type 2 inflammation. Factors beyond allergy need to be investigated to better understand the pathobiology of rhinoconjunctivitis.
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