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A-to-Z-Disease

      Occupational Asthma

      Asthma and your occupation:

      Approximately 15 percent of adults with asthma experience occupational asthma. Occupational asthma is a type of asthma caused by exposure to inhaled irritants in the workplace. Occupational asthma is often a reversible condition, which means the symptoms may disappear when the irritants that caused the asthma are avoided. However, permanent damage can result if the person experiences prolonged exposure. Examples of workplace irritants include:

      •    dusts
      •    gases
      •    fumes
      •    vapors

      What substances cause occupational asthma?

      Although new substances are developed every day that may cause occupational asthma, some known airborne irritants in the workplace include:

      Irritant

      Examples

      Type of occupations/
      environments at risk

      chemical dusts and vapors

      isocyanates, trimellitic anhydride, phthalic anhydride

      manufacturers of foam mattresses and upholstery, insulation, packaging materials, plasticizers, polyurethane paint

      animal substances

      bacterial dusts, dander, hair, mites, protein dusts, small insects

      farmers, animal handlers, kennel workers, jockeys, veterinarians,

      organic dusts

      cereals, coffee, flour, grains, tea

      millers, bakers, and other food processors

      cotton, flax, and hemp dust

      dusts from cotton and textile industry

      cotton and textile workers

      metals

      chromium, nickel sulfate, platinum, soldering fumes

      manufacturers of metals and refineries



      Treatment for occupational asthma:

      Treatment for occupational asthma usually includes avoiding the substance that triggers the asthma attack or symptoms. Persons with occupational asthma should also avoid inhaling gases such as chlorine, or nitrogen dioxide, and sulfur dioxide, as these substances can make asthma symptoms more severe. Other treatment may include medications to control the asthma. If the occupational asthma is advanced, treatment may also include:

      •    medications
      •    physical therapy
      •    breathing aids