<unk>  is a lung disorder in which substances found in the workplace cause the airways of the lungs to swell and narrow, leading to attacks of wheezing, shortness of breath, chest tightness, and coughing.
Occupational asthma
Occupational lung disease
Exercise induced asthma
Asthma
Chronic bronchitis
Asbestosis
Sarcoidosis
CMV pneumonitis