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Transient Global Amnesia (TGA)
Anne G. Osborn, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Abbreviations

              • Transient global amnesia (TGA)
            • Definitions

              • Sudden memory loss without other signs of cognitive or neurologic impairment that recovers completely within 24 hours
                • Both antero- and retrograde amnesia

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Nuclear Medicine Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                Selected References

                                1. Lin KY et al: Positive magnetic resonance imaging evidence of transient global amnesia following the use of Sildenafil. Clin Neuropharmacol. 43(2):52-3, 2020
                                2. Paech D et al: What remains after transient global amnesia (TGA)? An ultra-high field 7 T magnetic resonance imaging study of the hippocampus. Eur J Neurol. 27(2):406-9, 2020
                                3. Tynas R et al: Factors determining recurrence in transient global amnesia. BMC Neurol. 20(1):83, 2020
                                4. de Abreu Junior L et al: Optimization of magnetic resonance imaging protocol for the diagnosis of transient global amnesia. Radiol Bras. 52(3):161-5, 2019
                                5. Bocos-Portillo J et al: Unilateral or bilateral punctate hippocampal hyperintensities on DW-MRI: seizures, amnesia, or both? Neurol Sci. 39(9):1647-9, 2018
                                6. Park KM et al: Is transient global amnesia a network disease? Eur Neurol. 80(5-6):345-4, 2018
                                7. Arena JE et al: Transient global amnesia. Mayo Clin Proc. 90(2):264-72, 2015
                                Related Anatomy
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                                Related Differential Diagnoses
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                                References
                                Tables

                                Tables

                                KEY FACTS

                                • Terminology

                                  • Imaging

                                    • Top Differential Diagnoses

                                      • Pathology

                                        • Clinical Issues

                                          TERMINOLOGY

                                          • Abbreviations

                                            • Transient global amnesia (TGA)
                                          • Definitions

                                            • Sudden memory loss without other signs of cognitive or neurologic impairment that recovers completely within 24 hours
                                              • Both antero- and retrograde amnesia

                                          IMAGING

                                          • General Features

                                            • CT Findings

                                              • MR Findings

                                                • Nuclear Medicine Findings

                                                  • Imaging Recommendations

                                                    DIFFERENTIAL DIAGNOSIS

                                                      PATHOLOGY

                                                      • General Features

                                                        CLINICAL ISSUES

                                                        • Presentation

                                                          • Demographics

                                                            • Natural History & Prognosis

                                                              Selected References

                                                              1. Lin KY et al: Positive magnetic resonance imaging evidence of transient global amnesia following the use of Sildenafil. Clin Neuropharmacol. 43(2):52-3, 2020
                                                              2. Paech D et al: What remains after transient global amnesia (TGA)? An ultra-high field 7 T magnetic resonance imaging study of the hippocampus. Eur J Neurol. 27(2):406-9, 2020
                                                              3. Tynas R et al: Factors determining recurrence in transient global amnesia. BMC Neurol. 20(1):83, 2020
                                                              4. de Abreu Junior L et al: Optimization of magnetic resonance imaging protocol for the diagnosis of transient global amnesia. Radiol Bras. 52(3):161-5, 2019
                                                              5. Bocos-Portillo J et al: Unilateral or bilateral punctate hippocampal hyperintensities on DW-MRI: seizures, amnesia, or both? Neurol Sci. 39(9):1647-9, 2018
                                                              6. Park KM et al: Is transient global amnesia a network disease? Eur Neurol. 80(5-6):345-4, 2018
                                                              7. Arena JE et al: Transient global amnesia. Mayo Clin Proc. 90(2):264-72, 2015