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Hemiballismus or hemiballism is a basal ganglia syndrome resulting from damage to the subthalamic nucleus in the basal ganglia. [1] It is a rare hyperkinetic movement disorder, [2] that is characterized by pronounced involuntary limb movements [1] [3] on one side of the body [4] and can cause significant disability. [5]
The basal ganglia is a collective group of structures in the brain. These include the striatum, (composed of the putamen and caudate nucleus), globus pallidus, substantia nigra, and the subthalamic nucleus. Along with other structures, the basal ganglia are part of a neural circuit that is integral to voluntary motor function. [1]
The diagnosis requires the following criteria be met: [citation needed] the presence of bilateral calcification of the basal ganglia; the presence of progressive neurologic dysfunction; the absence of an alternative metabolic, infectious, toxic or traumatic cause; a family history consistent with autosomal dominant inheritance
Chorea tends to affect older stroke survivors while dystonia tends to affect younger ones. Men and women have an equal chance of developing the hyperkinetic movements after stroke. Strokes causing small, deep lesions in the basal ganglia, brain stem and thalamus are those most likely to be associated with post-stroke hyperkinesia. [15]
Charcot–Bouchard aneurysms are most often located in the lenticulostriate vessels of the basal ganglia and are associated with chronic hypertension. [1] Charcot–Bouchard aneurysms are a common cause of cerebral hemorrhage. Charcot–Bouchard aneurysm rupture might be linked to senile plaque formation in the Alzheimer's disease. [2]
Movement disorders present with extrapyramidal symptoms and are caused by basal ganglia disease. [2] ... Make differential diagnosis of the particular disorder ...
Additional MRI findings include high T 2 signal intensity with possible swelling in basal ganglia, and abnormal diffuse involvement of the subcortical white matter, cortical, and infratentorial brain. [5] [11] Involvement in the thalami, brain stem, and cerebellum may also be observed. [11]
Corticobasal degeneration (CBD) is a rare neurodegenerative disease involving the cerebral cortex and the basal ganglia. [1] CBD symptoms typically begin in people from 50 to 70 years of age, and typical survival before death is eight years.
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