Dyskinesia is the unwanted side effect from synthetic dopamine. The involuntary
movements that are broad swings of the legs or torso, like what you see Michael J Fox doing when his meds are on a downward trend. My husband gets this: his toes curl (involuntary), his right leg swings in broad circles. This combination forces him to walk on the side of his foot, and its hard to watch. Sometimes he’s even tripped his own self by the one out-of-control leg swinging around and grabbing the stable foot.