Tremor is the most common form of involuntary movement. With the exception of those affecting the facial region, tremors are frequently defined or characterized by the joint around which the body part moves. Descriptive terms used to describe the clinical phenomenology of tremor include rest tremors and action tremors. Rest tremor occurs when muscle is not voluntarily activated, whereas action tremor is present with voluntary contraction of muscle. Subtypes include postural, kinetic, and isometric tremor.
Postural tremor is present while voluntarily maintaining a position against gravity.
Kinetic tremor may occur during any form of voluntary movement. Intention or terminal tremor refers to exacerbation of kinetic tremor toward the end of a goal-directed movement. WE MOVE 2001. The material provided has undergone rigorous medical review. Information regarding the authors, editors, publisher, and medical reviewers of this material of the WE MOVE Web site is listed below.