Charcot-Marie-Tooth Disease Associated with ‘Essential Tremor’ and Normal and/or Slightly Diminished Motor Conduction Velocity

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Abstract
A study of 7 patients with Charcot-Marie-Tooth disease, associated with a dyskinesia clinically identical with essential tremor, in which motor conduction velocity in the upper limbs was normal or slightly diminished was presented. An analysis of age of onset, sex distribution and clinicals signs from cases in the literature is compared with the present series. A family with Charcot-Marie-Tooth disease in which affected members have widely different motor conduction velocity values is reported. Stress is laid upon the fact that categorization of this disease on electrophysiological studies in the upper limbs may present considerable difficulties.