A 65-year-old suffered from a stroke 2 days ago. He now presents with involuntary, violent, and flinging movements of the limbs on one side. What is the likely site of lesion in this patient?

Options

1. Subthalamic nuclei
2. Globus pallidus
3. Putamen
4. Caudate nucleus

Correct Answer

Subthalamic nuclei

Explanation

Lesions of the subthalamic nucleus cause hemiballismus, characterized by violent, involuntary flinging movements of the contralateral limbs. This is a classic presentation of subthalamic nucleus stroke or hemorrhage.

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