Advanced Examination Pearls: Differentiating Essential Tremor from Parkinsonian Tremor
Essential Tremor | Parkinsonian Tremor | |
---|---|---|
Speed | 5-10 Hz | 4-6 Hz |
Symmetry | Bilateral | Usually asymmetric |
Most common component | Postural | Rest |
Other parkinsonian symptoms | Absent | Present |
Helped with alcohol | Usually | Rarely |
Family history | Present often | Usually absent |