How can you know if you have copd?

Symptoms... COPD usually is caused by smoking. Symptoms include shortness of breath, wheezing, cough (either productive or not), weight loss or gain, cyanosis (blue discoloration of skin, lips, etc.), etc. COPD includes emphysema and chronic bronchitis. If you have ever smoked and you have some of these symptoms, see your doctor for a pulmonary function test to diagnose copd. It is treatable, not curable.