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Primary vs Postparalytic Hemifacial Spasm
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We read with interest the recent article by Colosimo and colleagues1 on hemifacial spasm (HFS), a common movement disorder with a significant impact on quality of life.2 The excellent study, which provided a systematic clinical comparison between primary and secondary forms of HFS, highlighted useful clinical information. We were surprised by the high prevalence (23%) of postparalytic HFS among their study cohort. In our prospectively collected series of 200 consecutive HFS patients evaluated at a single tertiary center using similar inclusion criteria, postparalytic HFS accounted for less than 5% of the cases, similar to the 7% observed in another large series in an American cohort.3 This may represent differences in referring patterns among tertiary centers or differential susceptibility among races to HFS following facial nerve damage.
In our limited series of patients with postparalytic HFS, the vast majority presented with orbicularis oculi and orbicularis oris spasm simultaneously at onset; signs . . . [Full Text of this Article] AUTHOR INFORMATION
Eng-King Tan, MD, MRCP(UK);
Ling-Ling Chan, MD
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