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Superior oblique myokymia
Jorge C Kattah1, Edmond J FitzGibbon
1Department of Neurology, University of Illinois College of Medicine at Peoria located at OSF Saint Francis Medical Center, 530 N. E. Glen Oak Avenue, Peoria, IL 61637, USA. kattahj@uic.edu
Abstract:
Superior oblique myokymia (SOM) is an uncommon, monocular movement disorder involving rapid torsional, low-amplitude contractions of the superior oblique muscle that causes monocular oscillopsia and diplopia. Ocular and neurologic examination in these patients is usually normal, and the clinical course is characterized by exacerbation remissions with good response to medical treatment. In this review, we present recent advances in the pathogenesis of SOM and provide an algorithm for the investigation and management of these patients.