Occupational asthma is a lung disorder in which substances found in the workplace cause the airways of the lungs to swell and narrow. This leads to attacks of wheezing, shortness of breath, chest tightness, and coughing.
Asthma - occupational exposure; Irritant-induced reactive airways disease
Asthma is caused by inflammation (swelling) in the airways of the lungs. When an asthma attack occurs, the lining of the air passages swells and the muscles surrounding the airways become tight. This reduces the amount of air that can pass through.
In persons who have sensitive airways, asthma symptoms can be triggered by breathing in substances called triggers.
Many substances in the workplace can trigger asthma symptoms, leading to occupational asthma. The most common triggers are wood dust, grain dust, animal dander, fungi, or chemicals.
The following workers are at higher risk:
- Detergent manufacturers
- Drug manufacturers
- Grain elevator workers
- Laboratory workers (especially those working with laboratory animals)
- Metal workers
- Plastics workers