Asthma and Allergy

Occupational Allergy

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It is very important to make the diagnosis of occupational allergies as early as possible because if there is a long delay before diagnosis the asthma may not improve on removal from exposure, and persist indefinitely. Exposure to organic dusts, chemicals, or animals at work can cause the development of all sorts of allergic responses. The clinical history usually provides the first clue by the association of symptoms with work, and recovery with absence from work, but it is seldom so clear-cut because prolonged reactions are common, and daily exposure adds up towards the end of the week.