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Relationships among allergic rhinitis, asthma, and chronic rhinosinusitis
Mariel G Rosati1, Anju T Peters
1Department of Internal Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Background:
Chronic rhinosinusitis (CRS) is a common disease in the United States. There are a significant number of patients with CRS who are refractory to standard medical and surgical therapy. Many of these patients also have comorbid allergic rhinitis (AR) and asthma, although the underlying pathophysiology that connects these three conditions remains unclear.
Objective:
The goal of this article is to review the relationships among CRS, AR and asthma.
Methods:
Scientific literature that addresses the prevalence of AR and asthma in CRS populations, the effect of AR and asthma on CRS disease severity, and whether treatment of AR and asthma can affect CRS outcomes was reviewed.
Results:
The literature supports the relationship between AR and CRS, but there is no direct evidence of causality the between the two conditions. There is a high prevalence of CRS in patients with asthma and the presence of CRS is associated with worse asthma outcomes. There is weak evidence that treatment of CRS may improve asthma outcomes. Targeting type 2 inflammation via biologics is being investigated in the treatment of asthma and CRS.
Conclusion:
AR, asthma, and CRS are closed related and understanding the associations among these comorbid diseases will have significant clinical implication.
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