Objective To investigate, by F-wave detection, the clinical efficacy of scalp acupuncture plus facial muscle exercises in treating refractory facial paralysis. Methods Sixty patients with refractory facial paralysis were randomly allocated to treatment and control groups, 30 cases each. The treatment group received scalp acupuncture plus facial muscle exercises and the control group, conventional acupuncture. F-wave latencies and durations were compared between the two groups before and after treatment. Res...