Chronic Obstructive Pulmonary Disease (COPD)
Chronic obstructive pulmonary disease (COPD) is one of the most common lung diseases. It makes it difficult to breathe. There are two main forms of COPD: Chronic bronchitis, defined by a long-term cough with mucus; Emphysema, defined by destructio...
Smoking is the leading cause of emphysema, a disease of the lungs that makes it hard to breathe. Learn more about how emphysema affects you...
Oxygen therapy refers to supplemental oxygen given to people with breathing disorders.
COPD symptoms are usually slow to develop and often don't appear until significant damage has occurred. Symptoms can come and go and may...
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