Tip - Cannot Stop Coughing? 8 Causes of Chronic Cough

You've been coughing for weeks. How do you know if it's just a hard-to-shake cold or something more serious? Coughing is one of the five most common reasons for a doctor's visit.
Tags: COPD, bronchitis, asthma, allergies, bronchitis, cough, cold, lungs, pertussis, pneumonia