Natural course and comorbidities of allergic and nonallergic rhinitis in children

Marit Westman1, Pär Stjärne, Anna Asarnoj

  • 1CLINTEC, Karolinska Institutet, Stockholm, Sweden. marit.westman@ki.se

Insights

Fewer children with allergic rhinitis remit compared to nonallergic rhinitis. Early allergen sensitization predicts allergic rhinitis development, while oral allergy syndrome is common in older children with allergic rhinitis.

Area of Science:

  • Pediatric Allergy and Immunology
  • Epidemiology of Allergic Diseases
  • Childhood Respiratory Health

Background:

  • Limited data exist on the natural history and comorbidities of childhood rhinitis from large birth cohort studies.
  • Understanding rhinitis phenotypes in children is crucial for managing allergic diseases.

Purpose of the Study:

  • To investigate rhinitis phenotypes in relation to the natural course and comorbidities of allergic diseases.
  • To analyze rhinitis development and remission in preschool and early school-aged children.
  • To identify associations between rhinitis, allergen sensitization, and other allergic conditions.

Main Methods:

  • Analysis of a birth cohort of 2024 children with IgE data at ages 4 and 8 years.
  • Classification of children into groups: allergic rhinitis, nonallergic rhinitis, allergic sensitization without rhinitis, or neither.
  • Longitudinal assessment of rhinitis status and associated allergic comorbidities.

Main Results:

  • Allergic rhinitis prevalence increased from 5% to 14% between ages 4 and 8, while nonallergic rhinitis decreased from 8% to 6%.
  • Remission rates were significantly lower for allergic rhinitis (12%) compared to nonallergic rhinitis (73%).
  • Allergic rhinitis and nonallergic rhinitis were associated with asthma, eczema, and food hypersensitivity; 25% of 8-year-olds with allergic rhinitis had oral allergy syndrome.

Conclusions:

  • Nonallergic rhinitis shows higher remission rates in early childhood compared to allergic rhinitis.
  • Allergen sensitization at age 4 predicts later allergic rhinitis development.
  • Oral allergy syndrome is a frequent comorbidity in 8-year-olds diagnosed with allergic rhinitis.
Abstract

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