无症状性呼吸系统疾病长尾启一在呼吸道疾病时，除通常有发热、倦怠感之外，还有咳嗽、咯痰、血痰等呼吸道症状；气短、呼吸困难、气喘等呼吸运动异常，及伴随呼吸运动而出现的胸痛等各种主要症状。而无症状性呼吸道疾病，是指呼吸道存在某种病变，但几乎没有自觉症状的一... Asymptomatic Respiratory System Diseases Respiratory symptoms such as cough, expectoration, bloody sputum and other respiratory symptoms; respiratory symptoms such as shortness of breath, dyspnea, asthma, and the like associated with Breathing chest pain and other major symptoms. Asymptomatic respiratory disease, refers to the respiratory tract there is a certain lesion, but almost no symptoms of a ...