MSFinals-4264

A 2-year-old child is being evaluated by a neurologist due to delayed motor development. The child’s general practitioner referred them to the specialist. The child exhibits slow, twisting, and repetitive movements of the arms when attempting to move or walk. Additionally, the child experiences rapid involuntary and jerky movements of the legs, along with oro-motor difficulties. There is no significant family history of neurological conditions, and the child’s two siblings are healthy. What is the most probable diagnosis, and in which zone is the lesion likely located?