The lung disorder that causing this symptoms is called the Chronic obstructive pulmonary disease.
Chronic obstructive pulmonary disease or COPD is a common lung disease that shows symptoms of increasing breathlessness. COPD includes lung diseases such as chronic bronchitis and emphysema. Causes of COPD are smoking, genetics, and environmental factors. This disease is treatable and can be treated by drinking medications such as bronchodilators, inhaled steroids, drinking antibiotics, and by quitting smoking.