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The report further shows that the risk of having asthma with multiple symptoms is substantially increased in those reporting symptoms from the nose, such as blocked nose and runny nose. Specifically, the investigators show that signs of chronic rhinosinusitis, which has been defined as having a minimum of two symptoms of nasal blockage, runny nose, lack of smell and/or pain from sinuses over a minimum of 12 weeks, further improve the risk of severe asthma. This is the first study based on an epidemiological cohort showing a close relationship between severe nasal symptoms and severe asthma.
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