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A Case with Late-onset MELAS with Hallucination and Delusion Hiroyuki Narita 1 , Toshinari Odawara 1 , Toshihiko Matsumoto 1 , Shigeru Kimura 2 , Tomoki Yamada 1 , Eizo Iseki 1 , Kazuya Miyakawa 3 , Hiroaki Hino 1 , Daiji Kato 1 , Kenji Kosaka 4 , Yoshio Hirayasu 1 1Department of Psychiatry, Yokohama City University School of Medicine 2Department of Psychiatry, Yokohama Minami-Kyosai Hospital 3Fujimidai Hospital 4Fukushimura Hospital Keyword: MELAS , hallucination , delusion , senile , SPECT pp.345-349
Published Date 2004/4/1
DOI https://doi.org/10.11477/mf.1406100273
  • Abstract
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 We report a 53-year-old male patient with late onset mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes(MELAS)with hallucination and delusion. The patient manifested various neurological symptoms including perceptive deafness, muscle weakness of limbs with loss of consciousness, sensory abnormalities in hands, feet and a face, abnormal sense of taste, tremor, palsy of upward eye movement and weak deep tendon reflexes prior to the psychotic episode. He was diagnosed as MELAS, because of high serum lactic acid and pyruvic acid, and the point mutation in the mitochondrial DNA 3243. SPECT imaging showed decreased perfusion in occipital cortex and thalamus. These SPECT changes improved after disappearing visual hallucination. Hallucination might be caused by delirium due to stroke-like episode. Dysfunction in the occipital cortex and thalamus might be involved with this perfusion change.

(Received : November 5, 2003)


Copyright © 2004, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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