Retrograde Amnesia as a Predominant Symptom of Transient Global Amnesia

J Korean Neurol Assoc > Volume 29(3); 2011 > Article

Journal of the Korean Neurological Association 2011;29(3): 234-237.

후향기억상실이 주증상인 일과성완전기억상실

이현아, 이형

계명대학교 의과대학 신경과학교실

Retrograde Amnesia as a Predominant Symptom of Transient Global Amnesia

Hyon-Ah Yi

Department of Neurology, Keimyung University School of Medicine, Daegu, Korea

Abstract

Transient global amnesia (TGA) causes retrograde amnesia, but there have been few reports of retrograde amnesia as a presenting symptom in TGA. A 52-year-old male who had acute amnesia for the past 4?years presented with TGA and recovered within 1?day. Brain magnetic resonance imaging revealed a lesion in the left hippocampus, and brain single-photon emission computed tomography revealed decreased blood flow in the left temporal and frontal areas. We speculated that hippocampal lesion with a frontal perfusion defect can be a cause of TGA. KeyWords:Retrograde amnesia, Transient global amnesia, Hippocampus