确诊职业性哮喘有两个重要理由,一是此类患者日见增多,二是有可能治愈。职业性哮喘患者的增多,是因为工业上使用可引起哮喘的化学物日见增多,还因为内科医生对职业性接触可以引起哮喘的认识大有提高。全世界哮喘患者估算约占2%,因地区,因接触不同的物质而有所不同。在日本哮喘归因于职业接触 There are two important reasons for the diagnosis of occupational asthma. One is the increasing number of such patients and the second is the possibility of cure. The increase in occupational asthma is due to the growing use of chemicals that cause asthma in industry, and also because physicians’ awareness of occupational exposure to asthma is greatly increased. About 2% of asthma patients are estimated worldwide, depending on the area, due to exposure to different substances. Asthma in Japan is attributed to occupational exposure