诊断支气管哮喘的诊断并无困难,在缓解期内,则以病史为主要的依据。一般都有长期反复发作的病史,大都因某些刺激因素或在半夜睡眠中突然发作,发作时胸闷气急、呼吸迫促、呼气长吸气短伴有哮鸣音,应用水剂肾上腺素皮下注射或氨茶礆静脉注射有立即缓解之效。凡属变态反应性哮喘者,则哮喘多自幼或青年时开始,并有家庭或个人过敏史,其前驱症以离位皮炎、过敏性鼻炎或过敏性咳嗽等为多见;非变态反应性哮喘或哮喘性支气管炎者以较年老者为多见,其前驱症为数月或数年支气管炎,好发于寒冬季节,发作吋咳嗽较剧,大量痰液吐之不尽,色白如泡沫或黄绿,伴有较严重肺气肿时, Diagnosis of bronchial asthma diagnosis is not difficult, in the remission period, then the medical history as the main basis. Generally have long-term recurrent history, mostly due to some stimulating factors or sudden onset of sleep in the middle of the night, onset of chest tightness and shortness of breath, shortness of breath, short breath with short wheeze, water agent epinephrine subcutaneous Intravenous injection or ammonia 礆 intravenous injection has immediate relief effect. Whenever an allergic asthma, the asthma more than young or youth, and have a history of family or individual allergies, and its precursor disorder with exfoliative dermatitis, allergic rhinitis or allergic cough are more common; non-allergic Asthma or asthmatic bronchitis are more common in older people, and their precursors are bronchitis for months or years. Occur in the winter season, onset of cough is more drama, a lot of sputum spit inexhaustible, white as foam or Yellow-green, accompanied by more severe emphysema,