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Association between asthma and rhinitis according to atopic sensitization in a population-based study
Bénédicte Leynaert1, Catherine Neukirch, Sabine Kony
1Inserm Unité 408, Paris, France.
The Journal of Allergy and Clinical Immunology
|January 10, 2004
Summary
Rhinitis significantly increases the risk of asthma, even after accounting for shared risk factors like allergies. This suggests rhinitis may directly contribute to asthma development, not just share common causes.
Area of Science:
- Immunology
- Respiratory Medicine
- Epidemiology
Background:
- Asthma and rhinitis frequently co-occur, but the underlying reasons for this comorbidity are not fully understood.
- The shared etiology between asthma and rhinitis remains a subject of ongoing scientific debate.
Purpose of the Study:
- To investigate whether common risk factors explain the coexistence of asthma and rhinitis.
- To assess the association between rhinitis and asthma, considering potential shared risk factors.
Main Methods:
- An international cross-sectional study involving young adults.
- Data collection included questionnaires, lung function tests, bronchoprovocation challenges, IgE measurements, and skin prick tests.
Main Results:
- Rhinitis was strongly associated with increased prevalence of asthma and bronchial hyperreactivity.
- The link between rhinitis and asthma persisted even after adjusting for atopy, total IgE, and family history of asthma.
- Specific allergen exposures amplified the asthma risk in individuals with rhinitis.
Conclusions:
- The strong association between asthma and rhinitis is not solely explained by shared risk factors such as atopy.
- Findings support the hypothesis that rhinitis may act as a risk factor for developing asthma.
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