When a patient presents with symptoms which resemble airway hyperreactivity that occurs on the job, the physician must employ the usual tools for evaluation of any patient. Specifically, he or she has to take a thorough history to determine if the workplace has any clear connection with the medical condition [1, 3].
The history in these cases will include assessment of the workplace, work process, and review of material safety data sheets. Of great importance is the occurrence of symptoms and whether they take place at or away from the place of employment. In other words, the occurrence of symptoms at work and their resolution on weekends, vacations, and holidays will suggest that work-related asthma is the reason for the illness [1, 2, 3].