Chronic cough: Several possible reason. Some blood pressure medication might cause dry cough. Some upper airway viral infection might last long. Pertussis is coming back to the community. Asthma sometimes presents as a chronic cough, a clue is family history of asthma, or person frequent cold and cough as a child. You might need a chest xray and then see a pulmonologist.
Answered 11/12/2012
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