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Case Reports in Neurological Medicine
Volume 2012 (2012), Article ID 278140, 3 pages
http://dx.doi.org/10.1155/2012/278140
Case Report

Unusual Forehead Tremor in Four Patients with Essential Tremor

Departament de Neurología, Hospital Universitari de Bellvitge, 08907 L’Hospitalet de Llobregat, Spain

Received 19 March 2012; Accepted 26 June 2012

Academic Editors: Y. Narita and B. Smith

Copyright © 2012 Jordi Gascón-Bayarri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Forehead tremor has only been reported in two patients with essential tremor, one with rhythmic tremor and the other with dystonic tremor. We report 4 new patients with essential tremor who present a 4–6 Hz frontal tremor registered by electromyography and unusual features like frontal tremor preceding limb tremor or unilateral involvement. Frontal tremor is present in some patients with essential tremor, sometimes preceding limb tremor. Treatment with botulinum toxin may be useful.