|
1
|
León-Ruiz M, Alonso-Singer P, Oliva-Navarro J. SREDA in a transient global amnesia patient: the overlooked link? Acta Neurol Belg 2022; 122:1393-1396. [PMID: 35585471 PMCID: PMC9116714 DOI: 10.1007/s13760-022-01963-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/25/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Moisés León-Ruiz
- Section of Clinical Neurophysiology, Department of Neurology, La Paz University Hospital, Paseo de La Castellana, 261, 28046, Madrid, Spain.
| | - Pablo Alonso-Singer
- Section of Clinical Neurophysiology, Department of Neurology, La Paz University Hospital, Paseo de La Castellana, 261, 28046, Madrid, Spain
- Refractory Epilepsy Unit, Department of Neurology, La Paz University Hospital, Madrid, Spain
| | - Javier Oliva-Navarro
- Section of Clinical Neurophysiology, Department of Neurology, La Paz University Hospital, Paseo de La Castellana, 261, 28046, Madrid, Spain
- Refractory Epilepsy Unit, Department of Neurology, La Paz University Hospital, Madrid, Spain
| |
Collapse
|
|
2
|
Hippocampal infarction: redefining transient global amnesia. Neurol Sci 2022; 43:4281-4286. [DOI: 10.1007/s10072-022-05980-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 02/21/2022] [Indexed: 10/18/2022]
|
|
3
|
Spiegel DR, Smith J, Wade RR, Cherukuru N, Ursani A, Dobruskina Y, Crist T, Busch RF, Dhanani RM, Dreyer N. Transient global amnesia: current perspectives. Neuropsychiatr Dis Treat 2017; 13:2691-2703. [PMID: 29123402 PMCID: PMC5661450 DOI: 10.2147/ndt.s130710] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Transient global amnesia (TGA) is a clinical syndrome characterized by the sudden onset of an extraordinarily large reduction of anterograde and a somewhat milder reduction of retrograde episodic long-term memory. Additionally, executive functions are described as diminished. Although it is suggested that various factors, such as migraine, focal ischemia, venous flow abnormalities, and epileptic phenomena, are involved in the pathophysiology and differential diagnosis of TGA, the factors triggering the emergence of these lesions are still elusive. Recent data suggest that the vulnerability of CA1 neurons to metabolic stress plays a pivotal part in the pathophysiological cascade, leading to an impairment of hippocampal function during TGA. In this review, we discuss clinical aspects, new imaging findings, and recent clinical-epidemiological data with regard to the phenotype, functional anatomy, and putative cellular mechanisms of TGA.
Collapse
Affiliation(s)
- David R Spiegel
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Justin Smith
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Ryan R Wade
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Nithya Cherukuru
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Aneel Ursani
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Yuliya Dobruskina
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Taylor Crist
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Robert F Busch
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Rahim M Dhanani
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Nicholas Dreyer
- Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA
| |
Collapse
|
|
4
|
Hippocampal Lesions of Diffusion Weighted Magnetic Resonance Image in Patients with Headache without Symptoms of Transient Global Amnesia. Dement Neurocogn Disord 2017; 16:87-90. [PMID: 30906377 PMCID: PMC6427988 DOI: 10.12779/dnd.2017.16.3.87] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 08/14/2017] [Accepted: 08/14/2017] [Indexed: 11/27/2022] Open
Abstract
Background The dot-like hippocampal signal intensity in diffusion-weighted MR images is well-known as a characteristic imaging feature in transient global amnesia, a neurological syndrome in which sudden forward-and-backward memory loss occurs that is slowly recovered within 24 hours. We here report on patients with this dot-like hippocampal hyperintensity who did not present with anterograde amnesia except for headaches. Case Report Two women without a specific medical history presented with sudden-onset headaches on the same day. Neither had any trauma or infection history before the symptom or any sudden emotional or postural changes. Brain MRI showed tiny hippocampal high signal intensity on diffusion-weighted images (DWI). Conclusions Dot-like hippocampal lesions seen on DWI may be present without memory impairment, and more studies are needed to determine whether there is any association with headache as in this case.
Collapse
|