Occupational asthma is characterized by variable airflow limitation and airway hyper responsiveness due to conditions related to a particular occupational environment. The substances which Induce Occupational Asthma are called Triggers. In Mexico there is an under diagnosis of occupational asthma > 99%. During the period 2009-2012 recorded 5 cases of occupational asthma, 40% of them caused by cereals.
Individual susceptibility may explain why some exposed individuals develop asthma while others do not. Because many cases of occupational asthma are mediated at least in part by specific IgE antibodies, investigators consider atopy as a risk factor for occupational asthma. The data suggest that atopy is a risk factor only for those exposed to high-molecular-weight antigens, and not for other forms of occupational asthma. Airway inflammation is a critical feature in the pathogenesis of asthma. Occupational asthma can be treated the same as regular asthma, with inhaled medicines called bronchodilators that open (dilate) the airways as well as inhaled anti-inflammatory medicines (glucocorticoids).