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DOI: 10.1177/08830738030180081201 Trigeminal Myokymia in a Young GirlDepartment of Neurology The University of Texas Medical School at Houston Houston, Texas pedro.mancias{at}uth.tmc.edu
Department of Neurology The University of Texas Medical School at Houston Houston, Texas 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. (J Child Neurol 2003;18:572574).
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