良性急性肌炎是指在流感恢复期发生的一过性肌炎。目前本病的名称尚不统一,文献常采用的名称有:并发于B型流感的急性肌炎、儿童一过性急性肌炎、儿童良性急性肌炎、良性感染后多肌炎、病毒后肌炎、B型流感后儿童的短暂麻痹等。 1957年瑞典的Landberg首先用“小腿流行性肌痛”一名报告了74例急性肌炎,该病曾于1955年春在斯得哥尔摩流行。此后,本病很久未受到人们的注意。直到1970年,Meddle- Benign acute myositis refers to a transient myositis that occurs during the flu recovery period. The current name of the disease is not uniform, the literature commonly used names are: concurrent in influenza B acute myositis, transient acute myositis in children, children with benign acute myositis, polymyositis after benign infection, viral posterior muscle Inflammation, transient paralysis of children after influenza B and the like. In 1957, Sweden’s Landberg first reported 74 cases of acute myositis with the name of “calf myalgia,” which had been popular in Stockholm in the spring of 1955. Since then, the disease has not been people’s attention for a long time. Until 1970, Meddle-