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- $Unique_ID{BRK02371}
- $Pretitle{}
- $Title{What Are the Causes of Asthma?}
- $Subject{breathing problems asthma bronchial constriction occupational baker
- baker's miller miller's toluene diisocyanate tdi breath breathe problem
- bronchial lung lungs bronchi bronchioles constricted asthmatic work place
- occupation}
- $Volume{H-5,Q-5}
- $Log{
- Anatomy of the Bronchial Tree*0005902.scf}
-
- Copyright (c) 1992,1993 Tribune Media Services, Inc.
-
-
- What Are the Causes of Asthma?
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- QUESTION: Recent breathing problems have been identified by my physician as a
- case of asthma. This took me completely by surprise, but set me to wondering
- if there might be something on my job that could cause this disease to develop
- at this stage of my life. I am a 32 year old male, and there is no history of
- such ailments in my family. What can you tell me?
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-
- ANSWER: I could probably tell you a lot more if you had indicated your type
- of employment in your letter. Another example of just how important the
- history is in tracking down the cause or origin of a disease.
- It is not easy to point out any specific agents that could provoke the
- bronchial constriction that typifies occupational asthma, as there are more
- than 100 known causes. However, we can develop a workable search plan by
- dividing the possible causes into animal, vegetable or mineral (chemical)
- categories, and you can figure out those that might apply in your case.
- The most common animal sources are hair, dander, and saliva. These
- particles, carried through the air, cause an immediate type of response, and
- is characteristic of the type of asthma seen in people who work in close
- contact with animals on a daily basis. Of the vegetable type antigens, flour
- is the most common, which may be made of any of the cereal grains, including
- wheat and barley. This is frequently called "baker's asthma" or "miller's
- asthma". However wood dust, particularly from the western red cedar, is
- another vegetable cause, affecting mill workers. One of the most common
- chemical agents known to cause asthma is toluene diisocyanate (or TDI for
- simplicity sake). This chemical is found in many products, like polyurethane
- foam, paint products and acrylics. About 5 percent to 10 percent of people
- exposed to this powerful chemical may develop asthma. The onset of symptoms
- may not be immediate, but will only become apparent hours after the work day
- exposure is over.
- If you work at a large plant, you may be able to get more help from your
- own medical staff, who may have seen cases like yours in the recent past.
- Once you have a suspect, further testing is necessary to establish the exact
- cause of your asthma.
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-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
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