Article
Positive family history of essential tremor influences the motor phenotype of Parkinson's disease.
Movement disorders : official journal of the Movement Disorder Society - 15 Nov 2009
Hedera Peter, Fang John Y, Phibbs Fenna, Cooper Michael K, Charles P David, Davis Thomas L
Abstract excerpt
Previous reports have suggested that essential tremor (ET) represents a risk factor for the development of Parkinson's disease (PD). Patients with long-standing ET who develop PD tend to have a tremor-dominant subtype. To further clarify this association, we examined patients from kindreds with autosomal dominant ET who had signs of isolated PD but did not meet criteria for overlapping ET. We identified 22...
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