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Allergic rhinitis: evidence for impact on asthma
1Department of General Practice and Primary Care, University of Aberdeen, Foresterhill Health Centre, Westburn Road, Aberdeen AB25 2AY, UK. drmike.thomas@btinternet.com
BMC Pulmonary Medicine
|December 5, 2006
Summary
Allergic rhinitis is common in asthma patients and can worsen asthma control. Treating both conditions together may improve patient outcomes.
Area of Science:
- Pulmonology
- Allergy and Immunology
Background:
- Comorbid allergic rhinitis is frequently observed in asthma patients, with prevalence up to 100% in allergic asthma.
- Allergic rhinitis diagnosis often precedes asthma, and rhinitis is an independent risk factor for asthma development.
Purpose of the Study:
- To review current evidence on the clinical impact of comorbid allergic rhinitis on asthma.
- To evaluate the effectiveness of various treatments for allergic rhinitis in asthma patients.
Main Methods:
- Review of existing literature and controlled studies.
- Analysis of observational and retrospective database studies.
Main Results:
- Conflicting results exist for intranasal corticosteroids in improving asthma symptoms.
- Anti-IgE therapy and leukotriene receptor antagonists show benefits for both conditions.
- Treating allergic rhinitis may lower asthma hospitalization and emergency visit risks.
- Comorbid allergic rhinitis is linked to increased medical costs and poorer asthma outcomes.
Conclusions:
- Allergic rhinitis is a marker for more difficult-to-control asthma.
- A combined therapeutic approach for allergic rhinitis and asthma may improve overall patient outcomes.
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