A very rare movement disorder characterized by involuntary flinging motions of the extremities, whose effects can sometimes be severe enough to prevent patients from being able to perform daily functions. It is usually associated with structural brain lesions but can occur with metabolic abnormalities. The symptoms can also decrease while the patient is asleep, unlike some movement disorders.
Jerking and twitching movements on one side of body.
A sudden movement of the limbs on one side of the body, caused by a disease of the basal ganglia.
Hemiballismus (HB) is an abnormal hyperkinetic neuro¬ muscular condition characterized by involuntary movement of the limbs on one side of the body, usually a result of damage to the subthalamic nucleus (STN), cerebral infarction, or hemorrhage. In the literature, hemichorea is used interchangeably with HB. Chorea is defined as involuntary jerky movements of the arms, legs, or face, and ballism can be defined by continuous, violent, coordinated, involuntary activity such that the limbs are flung about. Differential diagnosis between hemichorea and hemiballismus is sometimes difficult. HB is fairly uncommon in children and adults. HB is normally associated with an underlying pathology or lesion and will often occur in conjunction with other conditions, depending on the exact location of the insult.
A violent involuntary movement usually restricted to one arm and primarily involving the proximal muscles. It is a symptom of disease of the basal ganglia.
Involuntary movements similar to choreiform movements, but of much greater amplitude and force. The violent, throwing movements of the limbs are usually unilateral, and tend to occur acutely as a result of vascular damage to the mid-brain.
Irregular and uncontrollable flinging movements of the arm and leg on one side of the body result from a disease affecting the basal ganglia, which are nerve cell clusters in the brain responsible for muscular coordination.