Involuntary Movements Overview

Involuntary movements are movement symptoms that occur with the person’s control. Examples include tics, twitches, muscle spasms, fasciculations, seizures, convulsions, and many other types. Occasional occurrences of twitches or muscle spasms are not necessarily abnormal. One common time for twitches is right at the onset of sleep. However, there are also many types of abnormal involuntary movements resulting from various disorders.

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