By Dr. Jeffrey Wheeler, MDwise Chief Medical Director What is COPD? COPD (Chronic Obstructive Pulmonary Disease), often referred to as “emphysema” and “chronic bronchitis”, is a common breathing problem. COPD is caused by scarring and damage to your lung. Smoking is the most common cause of this damage. People with these problems may have a cough that is regular or comes and goes, shortness of breath that comes and goes or both. Sometimes people notice a wheezing sound, but this does not hap...