It usually results when preexisting lung disease causes Bronchial inflammation and obstruction.

通常源于原有肺部疾患造成支气管发炎和阻塞。

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Asthma is a refractory disease associated with chronic bronchial inflammation, whose syndromes are recurrent grasp, dyspnea, stuff chest of cough, then even orthopnea.

支气管哮喘是以反复发作的喘息、呼吸困难、胸闷或咳嗽等为证候特点的一类呼吸道疾病。

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Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages.

哮喘是一种支气管疾病，比花粉热（一种鼻道的过敏性炎症）要少见得多。

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Bronchial inflammation generates free radicals, and there is evidence that the antioxidant levels in the respiratory tract lining of asthmatics are reduced.

BBC: Women are at greater risk than men