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Amnesia

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Related Experiment Video

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Assessing Changes in Synaptic Plasticity Using an Awake Closed-Head Injury Model of Mild Traumatic Brain Injury

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Thalamic Amnesia Mimicking Transient Global Amnesia.

Nadia M Giannantoni¹, Giordano Lacidogna, Aldobrando Broccolini

¹*Institute of Neurology †Department of Gerontology, Geriatrics and Physical Medicine, Catholic University, Rome, Italy.

The Neurologist

|June 16, 2015

Summary

This summary is machine-generated.

Transient global amnesia (TGA) can mimic other conditions. A case revealed a thalamic ischemic lesion despite TGA-like symptoms, emphasizing the need for neuroimaging in emergency evaluations.

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Area of Science:

Neurology
Emergency Medicine

Background:

Transient global amnesia (TGA) is a common emergency department presentation.
Differentiating TGA from mimicking conditions is challenging, with no established consensus for emergency evaluation.
Vascular amnesia can present with symptoms similar to TGA.

Observation:

A 69-year-old woman presented with abrupt anterograde amnesia, a repeat of a prior episode initially diagnosed as TGA.
Clinical presentation strongly suggested TGA, but subsequent evaluations revealed a different underlying cause.

Findings:

Neuroradiologic, neuropsychological, and neurophysiological assessments confirmed vascular thalamic amnesia.
Neuroimaging identified a thalamic ischemic lesion in a patient fulfilling TGA criteria.

Implications:

This case underscores the critical importance of neuroradiologic screening in the emergency department for amnesic syndromes.
Even with classic TGA symptoms, neuroimaging is essential to rule out underlying vascular pathology.
Accurate diagnosis of amnesia requires a comprehensive approach beyond initial clinical presentation.