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Occupational asthma
Definition:
Occupational asthma is a lung disorder characterized by attacks of breathing difficulty, wheezing, prolonged exhalation, and cough. It is caused by various agents found in the work place (see also bronchial asthma). These symptoms are usually due to spasms of the muscles lining the airways, which cause them to narrow excessively. Alternative Names:
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Asthma - occupational exposure; Irritant-induced reactive airways disease Causes, incidence, and risk factors:
There are many agents in the workplace that can cause occupational asthma. Most commonly, these include protein molecules (wood dust, grain dust, animal dander, fungi) or other chemicals (especially di-isocyanates). Though the actual rate of occurrence of occupational asthma is unknown, it is suspected to cause 2-20% of all cases of asthma in industrialized nations. The following workers are at higher risk: - Plastics workers
- Metal workers
- Bakers
- Millers
- Farmers
- Grain elevator workers
- Laboratory workers
- Woodworkers
- Drug manufacturers
- Detergent manufacturers
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