Cough: Now, please return to your doctor for follow up. It is certainly possible for a cough to linger 3-4 weeks after an illness is resolved. However it sounds like your cough is still distressing. If there has been no real improvement, consideration may be given to getting a chest X-ray, pulmonary function testing to check for asthma, and possibly other treatment.
Answered 12/15/2014
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