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. 2013 Apr 18:3:tre-03-147-3163-2.
doi: 10.7916/D8057DNW. Print 2013.

A slow orthostatic tremor of primary origin

Sophie M Coffeng  1 , Jorrit I Hoff, Selma C Tromp
Affiliations

A slow orthostatic tremor of primary origin

Sophie M Coffeng et al. Tremor Other Hyperkinet Mov (N Y). .

Abstract

Background: Orthostatic tremor (OT) is a high-frequency tremor (13-18 Hz) present in the legs when standing. Underlying disease is found in one-third of OT patients.

Case report: We describe an 86-year-old man with progressive shaking of the legs while standing, which disappears immediately after sitting down or while walking. Polymyography confirmed a tremor of the legs (10-11 Hz) while standing. Magnetic resonance imaging (MRI) and neurologic examination showed no underlying disease.

Discussion: Primary OT can appear at a lower frequency of 10-11 Hz.

Keywords: Orthostatic; tremor.

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Conflict of interest statement

Financial disclosures: None.

Conflict of Interests: The authors report no conflicts of interest.

Figures

Figure 1
Figure 1. Polymyography Of The Right Tibialis Anterior And Left Gastrocnemius Muscles.
Measurements during resting (A) and standing (B). Frequency analysis with fast Fourier transformation (C) during standing showed a peak frequency of 10.3 Hz.
See this image and copyright information in PMC

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