Steam Train Sign in Slow Orthostatic Tremor
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DOI: 10.1002/mdc3.13422
Abstract: The helicopter sign is a pathognomonic sign of orthostatic tremor constituting the auditory correlate of the characteristic high frequency (13 to 18 Hz) tremor in the legs upon standing. 1 The auditory correlate of low… read more here.
Keywords: tremor; steam train; etiology; slow orthostatic ... See more keywords