| 1. | Intrinsic asthma : asthmatic attacks are precipitated by respiratory infections , exposure to cold , exercise , stress , inhaled irritants , and drugs such as aspirin . adults are most often affected
内源性哮喘:哮喘发作与呼吸道感染有关，暴露于严寒，锻练，压力，吸入刺激物，药(如阿斯皮林) 。成年人最常受其影响。 |
