It's hard to know if my breathing problems are being caused by asthma or emphysema. How can we tell?

Pft's. Pulmonary function tests with carbon monoxide diffusion co-efficients will help to distinguish the two.
Pft's. Pulmonary function tests with carbon monoxide diffusion co-efficients will help to distinguish the two.
Pft's. Pulmonary function tests with carbon monoxide diffusion co-efficients will help to distinguish the two.
PFTs. Pulmonary function tests (pfts) can diagnose asthma and copd. Asthma has reversible obstruction whereas COPD has chronic obstruction. If your pfts show no obstruction when you are not having an exacerbation, the diagnosis is most likely asthma. If obstruction is still present and does not completely reverse with bronchodilator, the diagnosis is likely COPD (chronic obstructed pulmonary disease).