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支气管哮喘是主要因支气管平滑肌可逆性痉挛收缩致支气管狭窄的一种过敏性疾病,部分病例可能具有轻度免疫缺陷,经流行病学调查,儿童哮喘发病率为0.90至1.64%,男孩多于女孩。
Bronchial asthma is an allergic disease mainly caused by bronchial smooth muscle contractile spasm contraction caused by bronchial stenosis. Some cases may have mild immunodeficiency. According to the epidemiological investigation, the incidence of childhood asthma is 0.90 to 1.64%, and there are more boys than girls .