Gaze-evoked orbicularis oculi myokymia.
The cases of six patients with pronounced, persistent, isolated gaze-evoked orbicularis oculi myokymia (GEOM) discovered fortuitously are described. None had brain-stem lesions, and two had associated, unusual cranial synkinesis (trigeminofacial, hypoglossal-facial, and spinal accessory-facial). Additional features included asymmetric blinking and pseudoblepharoclonus in a third patient and buccopharyngeal synkinesis and post-deglutional tremors in a fourth. Ptosis and pupillary changes were absent. With the possible exception of one case, GEOM seems to be a congenital benign oculofacial synkinesis of brain-stem origin.
Jacome
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Department of Medicine, Franklin Medical Center, Greenfield, Massachusetts, USA.
D000328:Adult; D000368:Aged; D001767:Blinking; D004576:Electromyography; D005133:Eye Movements; D005154:Facial Nerve / Q000503:physiopathology; D005207:Fasciculation / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000503:physiopathology*