<s>[INST] What is the Natural History of Occupational Asthma? [/INST] 
If exposure to the causative agent ceases completely, the condition will nearly always improve. If this happens within the first two years of the development of the condition then complete recovery is usual. The longer the exposure continues however, not alone is there a tendency for the condition to get worse, but the less likely it is that there will be a complete recovery although a cessation of exposure is nearly always of benefit. For these reasons identifying a case of occupational asthma as early as possible is of paramount importance, and hence the reason for health surveillance.

 Source: Occupational Asthma. Link: https://www.hsa.ie/eng/workplace_health/occupational_asthma_and_dermatitis/occupational_asthma_frequently_asked_questions/. Field: Lung Disease. Disease: Asthma </s>