Cough is always due to a respiratory tract condition, somewhere between the nose & the depths of the lung. We divide it in half, into “Upper” and “Lower”.
- The Upper Respiratory Tract includes the nose, sinuses, throat, & trachea (windpipe).
- The Lower Respiratory Tract means the lungs.
- (See Diagrams — Anatomy of the Upper and Lower Respiratory Systems
For the clinician’s approach to diagnosing “Cough,” select either:
Acute Cough (lasting 2-3 weeks or less)
Chronic Cough (going on 4 weeks or more)