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Does cough medicine make asthma worse? 

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In children with asthma who cough, cough should not be used as the predominant symptom to direct asthma therapy.
Our results suggest that extrathoracic airway dysfunction may account for asthma-like symptoms, particularly chronic cough.
Early anti-inflammatory treatment might, therefore, be beneficial in cough-variant asthma, as recommended in classic asthma.
These data confirm that cough in asthma can be partially related to airway inflammation.
The importance of cough in asthma is highlighted by good correlation between cough and the ACT score in patients without comorbid rhinitis.
In patients with comorbid rhinitis, cough appears related more to rhinitis than to asthma control.
Diagnosis and treatment for asthma differs according to the duration of cough.
These are linked to chronic cough rather than to asthma.

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