In the 2018 consensus statement by the Movement Disorder Society on the classification of tremors, the definition of essential tremor (ET) was narrowed to bilateral upper limbs action tremor with the arbitrary cutoff of at least 3 years' duration. Besides ET, an essential tremor-plus (ET-plus) category was created, with additional neurological signs of uncertain clinical significance, including rest tremor, mild cognitive signs, mild neuropathy, mild ataxia, or questionable dystonic postures with no clear boundaries.

中文翻译：

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基本震颤：临时标签。

在运动失调协会2018年关于震颤分类的共识声明中，将基本震颤（ET）的定义缩小为双侧​​上肢动作震颤，任意截止时间至少为3年。除ET外，还创建了基本的震颤加（ET-plus）类别，并具有不确定的临床意义的其他神经系统症状，包括静息震颤，轻度认知症状，轻度神经病，轻度共济失调或可疑的张力障碍姿势，没有明确的界限。