患者,男,60岁,因持续不自主咀嚼运动2年,于1999年3月12日来诊。患者2年前因琐事而烦躁、失眠,次日觉张口较舒服,伴言语中断。数小时后出现咽部持续不自主地咀嚼运动,时轻时重,重则双侧咀嚼肌非常酸痛,有时舌及颊粘膜被咬伤。当欲自制时,双侧面颈部肌张力逐渐增高,呈面具脸,紧接着 Patient, male, 60 years old, came to the clinic on March 12, 1999 for 2 years of involuntary chewing exercise. Patient 2 years ago because of trivial irritability, insomnia, the next day feel mouth more comfortable, with speech interruption. A few hours later the throat continued to chew unintentional exercise, when the light weight, weight is very severe bilateral masticatory muscle, sometimes the tongue and buccal mucosa was bitten. When you want to self-control, double-sided neck muscle tension gradually increased, was a mask face, followed by