目的探讨咳嗽变异性哮喘（ CVA）的误诊的原因及诊断方法。
Objective To explore causes of misdiagnosis of cough variant asthma(CVA).
目的：探讨咳嗽变异性哮喘的临床特征及治疗效果，提高对该病的认识。
Objective: Discuss the clinical features and therapeutic efficacy of cough variant asthma to improve the comprehension of the disease.
目的探讨支气管扩张试验对咳嗽变异性哮喘（CVA）的诊断及鉴别诊断的意义。
Objective To explore the diagnostic and differential significance of Bronchiectasis Test in Coughing Variant Asthma(CVA), and the aim to decrease the misdiagnosis rate.
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