A 38-year-old man is brought to the office for a behavioral modification examination. According to his wife, the patient has experienced frequent outbreaks of rage, a gloomy mood, and sleeplessness. Because of his lack of attention and memory, the patient just lost his work as a machine operator. He has also had involuntary, jerky, nonpurposeful motions of the limbs and face for numerous years, which have increasingly deteriorated. These odd motions occur while he is awake but not while he is sleeping. His 55-year-old mother suffers from dementia and has similar odd bodily motions. Which of the following indicated areas of a normal brain is most likely to be impacted by the illness process in this patient?

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Eductional Objective: The caudate head is located in the inferolateral wall of the lateral ventricle's frontal horn. The internal capsule separates it from the globus pallidus and putamen. Huntington disease is characterized by atrophy of the caudate nuclei and enlargement of the lateral ventricles, which may be seen on neuroimaging.

A 38-Year-Old Man Is Brought to the Office for a Behavioral