Mancias Pedro, Butler Ian J
Department of Neurology, The University of Texas Medical School at Houston, 77030, USA.
J Child Neurol. 2003 Aug;18(8):572-4. doi: 10.1177/08830738030180081201.
Myokymia results from complex bursts of repetitive discharges of a motor unit typically attributable to a demyelinating condition. We report a 12-year-old girl with unilateral trigeminal myokymia who presented with involuntary jaw movements. Electromyography demonstrated unilateral rhythmic myokymic discharges in the left masseter and temporalis muscles at a rate of 3.5 Hz. Abnormal jaw movements spontaneously resolved over 8 months without treatment or residual deficits. The pathophysiology of myokymic discharges is discussed.
肌束震颤是由运动单位重复放电的复杂阵发引起的，通常归因于脱髓鞘疾病。我们报告了一名12岁患有单侧三叉神经肌束震颤的女孩，她出现了不自主的下颌运动。肌电图显示左侧咬肌和颞肌有单侧节律性肌束震颤放电，频率为3.5赫兹。异常的下颌运动在8个月内未经治疗自行缓解，且无残留缺陷。本文讨论了肌束震颤放电的病理生理学。
