Medically reviewed by Susan Russell, MD Key Takeaways Obstructive lung diseases like COPD cause trouble when you're exhaling air.Restrictive lung diseases like pulmonary fibrosis make it harder to ...

What Is Obstructive Lung Disease? People with obstructive lung disease have shortness of breath because it's hard for them to exhale all the air from their lungs. Because of damage to the lungs or ...

Description: Chronic obstructive pulmonary disease (COPD) refers to permanent lung damage, usually caused by smoking, in which there is an obstruction to air flow during exhalation. The two major ...