Tremor overview
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Tremor overview On the Web |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Tremor is an unintentional, somewhat rhythmic, muscle movement involving to-and-from movements (oscillations) of one or more parts of the body. It is the most common of all involuntary movements and can affect the hands, arms, head, face, vocal cords, trunk, and legs. Most tremors occur in the hands. In some people, tremor is a symptom of another neurological disorder. The most common form of tremor, however, occurs in otherwise healthy people.
Historical Perspective
James Parkinson, identified the tremor as "involuntary tremulous motion in parts not in action," in his essay on the shaking palsy, in 1817.
Classification
Tremor may be classified into resting or action tremor. Action tremor includes postural, kinetic (simple or intentional), isometric and task-specific tremor.