Browse comprehensive, doctor-reviewed information on 6 health conditions.
Asthma is a chronic respiratory condition in which the airways narrow and swell and may produce extra mucus. This can ma...
Bronchitis is an inflammation of the lining of the bronchial tubes, which carry air to and from the lungs. Acute bronchi...
Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease that causes obstructed airflow from ...
Lung cancer is a type of cancer that begins in the lungs. It is the leading cause of cancer deaths in the United States....
Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus, caus...
Sleep apnea is a serious sleep disorder in which breathing repeatedly stops and starts during sleep. Obstructive sleep a...