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    Thalamic dementia is an uncommon type of stroke that presents with disorientation, behavioral changes, and impairment of executive functions, with relative preservation of motor functions. It is typically caused by paramedian territory infarctions of the thalamus, most often due to ischemic insult at the tip of the basilar artery. In this report, we present a case of bilateral thalamic infarcts resulting in thalamic dementia with severe behavioral manifestations in a 64-yr-old man with no preexisting neuropsychiatric comorbidities. A trial of amantadine, a dopamine-promoting agent, in the acute rehabilitation unit in an attempt to manage his agitation led to multiple weeks of dramatic behavioral improvement and increased participation in therapies. Dopamine receptors are believed to be present at increased densities in thalamic nuclei with mesolimbic projections, suggesting that they are able to modulate limbic functions such as arousal, emotion, and memory. This case report, aimed both to increase the awareness of this uncommon stroke syndrome and describe the observed effect of amantadine, will ultimately help clinicians properly recognize thalamic dementia, minimize unnecessary investigations, and develop effective neurorehabilitation strategies in these patients. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.


    Kiin Kim, Abhinav Mohan, Bi-Ying Yeh, Youhans Ghebrendrias, Gary Brentlinger, Jay Han. Thalamic Dementia in Acute Inpatient Rehabilitation-Role for Amantadine? American journal of physical medicine & rehabilitation. 2021 Jan 01;100(1):e9-e12

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    PMID: 32251108

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