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Complex hyperkinesia during recovery from left temporoparietal cortical infarction
A Ferbert1, H B Rickert, R Biniek
1Department of Neurology, RWTH Aachen, F.R.G.
Summary
A stroke affecting the brain cortex and subcortical areas, but not the basal ganglia, caused unusual arm movements. This case highlights a rare presentation of hyperkinesia following ischemic stroke.
Area of Science:
- Neurology
- Neuroscience
- Stroke Medicine
Background:
- Basal ganglia lesions are commonly associated with hyperkinesia.
- Cortical-subcortical ischemic infarctions typically present with different neurological deficits.
Observation:
- A 51-year-old male with prior basal ganglia and pons lacunar infarctions experienced complex, involuntary right arm movements.
- These movements emerged one day after a left middle cerebral artery ischemic infarction affecting cortical-subcortical regions, notably sparing the basal ganglia.
Findings:
- The observed hyperkinesia, characterized by stereotyped and repetitive movements of the hand, fingers, or proximal arm muscles, is unprecedented following an ischemic stroke that spares the basal ganglia.
- This contrasts with established literature linking hyperkinesia predominantly to basal ganglia damage.
Implications:
- This case expands the understanding of hyperkinesia's etiology, suggesting cortical-subcortical pathways may also contribute to its development.
- Further research into the neurocircuitry affected by cortical-subcortical strokes is warranted to elucidate the mechanisms underlying this rare hyperkinetic presentation.