Medical MCQ-A 45 years male presents with hypeension. He has sudden abnormal flinging movements in right upper and lower limbs. Most likely site of haemorrhage is :

A 45 years male presents with hypeension. He has sudden abnormal flinging movements in right upper and lower limbs. Most likely site of haemorrhage is :

Substantia nigra

Caudate nuclei

Pons

Subthalmic nuclei

Question Category:

Medicine

Correct Answer:

Subthalmic nuclei

Description:

Answer is D (Subthalmic Nucleus): The patient's abnormal movement is 'Hemiballismus. Hemiballismus manifests as sudden and often violent flinging movement of a proximal limb usually an arm. Hemiballismus develops due to lesion in the subthalamic nucleus. Remember: Abnormal movement Site of lesion 1. Chorea * Caudate nucleus and Putamen (striatum) 2. Athetosis * Lentiform nucleus (Globus pal lidus) 3. Hemiballismus * Subthalamic nucleus 3 4. Parkinsonism * Substantia nigra

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