Tremor Types in Parkinson Disease: A Descriptive Study Using a New Classification

Table 1

Tremor types in Parkinson disease.

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Type I. Pure resting tremor

Type II. Mixed resting and action tremor with similar frequencies

 II-R. Action tremor with a time lag

 II-C. Action tremor without a time lag

Type III. Pure action tremor

Type IV. Mixed resting and action tremor with different frequencies

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Difference <1.5 Hz; difference >1.5 Hz.