Ballismus This is a term used to describe wild flinging movements which may occur to such an extent that they throw the patient off balance. The condition usually occurs as a result of a lesion in the subthalamic region and only affects one side. In this case it is called hemiballismus. Choreiform Activity This is a series of involuntary movements, which occur in the face and limbs.
They are quicker than those of athetosis and are also made worse by voluntary movement. Many patients show a combination of choreiform and athetoid activities. The basal ganglia are considered to be a fault in choreiform problems.
