Occupational asthma is a breathing (respiratory) disease caused by exposure to a trigger in the workplace. A trigger is an external factor or condition in the body that causes the asthma to occur or worsen. Occupational lung disease has been a major public health problem in China, despite significant achievements in disease recognition and exposure controls. Due to Asthma, over 1.2 million deaths in China in 2010. There has been a dramatic increase in the incidence of asthma in China over the last 20 years, and estimates that the rates are up by as much as 40 percent over the last five years.
The development of occupational asthma (OA) is likely to result from the complex interaction of environmental and host factors. This article addresses a series of issues relating to the multiple environmental factors that could affect the initiation of OA, including the intrinsic characteristics of causative agents, as well as the influence of the level, mode and route of exposure.Treatment mostly involves completely avoiding the offending agent as soon as possible, combined with routine asthma treatments.