Myotonia Congenita in Dizygotic Twins

摘要

A pair of dizygotic twins suffering from myotonia congenita born in Great Britain, is described. The twins were subjected to genetic, biochemical and electromyographic studies as were 5 relations in three generations. Spina bifida occulta was found in both popositi and is regarded as coincidental. The rarity of a recessive mode of inheritance in myotonia congenita in Great Britain is discussed.