Hypoglossal myokymia presenting as paroxysmal dysarthria following head and neck radiotherapy.

A 64 year-old woman with prior history of clivus leiomyosarcoma developed brief episodes of paroxysmal dysarthria. Previously, she received trans-sphenoidal resection, chemotherapy and radiotherapy (60 Gy) that ended 2 years before (figure 1). Neurological examination revealed paroxysmal hypoglossal rippling movements on the right hemitongue without either atrophy …