“原因不明”的长期发热是临床上常见的病症,可由多种病因和多种器官、组织病变所致,临床表现多样,常引起诊治上的困难。本刊约请同济医科大学附属同济医院有关专业人员,就此专题撰写一组笔谈稿,以供各地临床工作者参考。 "Long-term fever is a common clinical disease, can be caused by a variety of etiologies and a variety of organs and tissues, clinical manifestations and diverse, often causing difficulties in diagnosis and treatment. The magazine invited Tongji Medical College Affiliated Tongji Hospital professionals, writing a group of pen on this topic to discuss for clinical reference.