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Clinical Aspects of the Niigata Minamata Disease Takayoshi Shimohata 1 , Koichi Hirota 2 , Hitoshi Takahashi 3 , Masatoyo Nishizawa 1 1Department of Neurology, Brain Research Institute, Niigata University 2Department of Neurology, Higashi Inaniwa Clinic 3Department of Pathology, Brain Research Institute, Niigata University Keyword: 水俣病 , 新潟水俣病 , メチル水銀 , 臨床像 , 剖検 , Minamata disease , Niigata Minamata disease , methyl mercury , clinical presentation , autopsy pp.31-38
Published Date 2015/1/1
DOI https://doi.org/10.11477/mf.1416200084
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Abstract

The Minamata disease was discovered in the Minamata region, Kumamoto Prefecture, Japan, in 1956. Symptoms of this disease included cerebellar ataxia, sensory disturbance, narrowing of the visual field, and hearing and speech disturbances. In 1965, similar conditions were identified in persons living around the Agano River area, Niigata Prefecture, Japan and accordingly termed as the Niigata Minamata disease or the second Minamata disease. Both the diseases have been attributed to poisoning with methyl mercury that was generated during the production of acetaldehyde using mercury as a catalyst. The discharged methyl mercury accumulated in fishes and shellfishes and caused poisoning on consumption.

This review discusses the history, clinical presentation including atypical forms, and autopsy findings of the Niigata Minamata disease. In addition, it highlights the problems about criteria for official recognition and the therapeutic trial for this disease.


Copyright © 2015, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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