overview of cough and Pharmacologic therapy by Antitussives and Expectorants 

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cough - overview of cough and Pharmacologic therapy by Antitussives and Expectorants
Lecturer - Dr Rajesh Gubba
Cough can be classified based upon the duration of the cough; within each category are likely diagnostic possibilities. Acute cough exists for less than three weeks and is most commonly due to an acute respiratory tract infection. Other considerations include an acute exacerbation of underlying chronic pulmonary disease, pneumonia, and pulmonary embolism.
Cough that has been present longer than three weeks is either subacute (three to eight weeks) or chronic (more than eight weeks)
Patients who seek medical attention for chronic cough are more likely to be female .
Among patients with chronic cough, women tend to cough more often and to have heightened cough reflex sensitivity compared to men