Shy Drager Syndrome Flashcards
1
Q
What is it?
A
Ballismus or ballism (called hemiballismus or hemiballism in its unilateral form) is a very rare movement disorder. It is a type of chorea caused in most cases by a decrease in activity of the subthalamic nucleus of the basal ganglia, resulting in the appearance of flailing, ballistic, undesired movements of the limbs.[1] It can also appear rarely due to certain metabolic abnormalities. It is a rare movement disorder, being 500 times rarer than Parkinson’s disease.[
