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Table 54-1

Advanced Examination Pearls: Differentiating Essential Tremor from Parkinsonian Tremor

Essential TremorParkinsonian Tremor
Speed5-10 Hz4-6 Hz
SymmetryBilateralUsually asymmetric
Most common componentPosturalRest
Other parkinsonian symptomsAbsentPresent
Helped with alcoholUsuallyRarely
Family historyPresent oftenUsually absent