Minamata disease is alkylmercury poisoning causing Hunter-Russell syndrome due to ingestion of seafood polluted by industrial waste. Two epidemics occurred in Minamata (1956) and Niigata (1965), Japan. Many infants with "cerebral palsy" in villages where adult cases occurred were established as having congenital Minamata disease. Developing brains were affected by alkylmercury through transplacental exposure and even by breastfeeding. This report reviews the history, clinical features, pathology, epidemiology, metal analysis, experiments, and sociolegal aspects of congenital Minamata disease. Many victims are still alive and their present conditions are reviewed. (J Child Neurol 2000;15:458-464).
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