A tremor is a rhythmic involuntary movement that looks like rapid and ... when shaking happens when a body part is at rest. For example, a person may be sitting comfortably with their hands ...

Involuntary head twitching may range from neck spasms to uncontrolled tremors. Causes may include several movement disorders, such as Tourette syndrome and Parkinson’s disease. Involuntary head ...

Focal dystonia occurs when only one single body part experiences involuntary movements. For example, if you have eye ...

Common examples of skeletal muscles include major muscle groups that control movement of the arms, legs, and body, such as: Involuntary muscles are muscles that are not under conscious control.

The existence of such involuntary eye movements has been known for several decades, but how the brain generates them has remained a scientific mystery. Reproduced, with permission, from ...

For example, the risk of TD is much greater with the older ... In contrast, persistent tardive syndromes are uncommon in children. The most common type of involuntary movement associated with TD is ...