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A rare hereditary disease manifesting soon after birth and characterized by myotonia but without muscular wasting or other symptoms. Also called Thomsen's disease.
Late 19th century; earliest use found in Journal of Nervous and Mental Disease. From scientific Latin myotonia congenita from myotonia + congenita, feminine of congenitus congenital.
myotonia congenita/mʌɪə(ʊ)ˌtəʊnɪə kənˈdʒɛnɪtə/
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