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The term hemichorea refers to chorea of one side of the body, such as chorea of one arm but not both (analogous to hemiballismus). Presentation.
Hemiballismus or hemiballism is a basal ganglia syndrome resulting from damage to the subthalamic nucleus in the basal ganglia. [1] It is a rare hyperkinetic movement disorder, [2] that is characterized by pronounced involuntary limb movements [1] [3] on one side of the body [4] and can cause significant disability. [5]
Paroxysmal kinesigenic dyskinesias are often inherited in an autosomal dominant fashion and several genes have now been identified where mutations can cause this disease. . The genes typically code for proteins known to be involved in synaptic transmission, ion channels or ion transporters.
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Hyperglycemia-induced involuntary movements (hemichorea and bilateral dystonia) ... meaning that it only occurs when performing certain tasks. Writer's cramp is a ...
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Usually all four limbs are affected, but there are cases reported where just one side of the body is affected (hemichorea). Typical chorea includes repeated wrist hyperextension, grimacing, and lip pouting. The fingers can move as if playing the piano.