Your son's cough does not sound like asthma. He appears to have a wet phlegmy cough. Children with asthma have a dry cough which usually worries the child in the middle of the night. Also the cough is worse with exercise which is not the case with your son's cough. In addition he has not improved on asthma treatment.It is time for your son to be seen by a paediatric pulmonologist so that a proper diagnosis can be made of his illness.
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