Summary 1. The clinical findings in a case of myotonia congenita (Thomsen's disease) are presented.2. Attempts at demonstrating a myotonia-inducing substance in the bloodof the patient are described. These attempts were unsuccessful.3. The myotonic pattern of response was uninfluenced by complete curarizationof the patient. The significance of this in the localization of the muscular abnormality is discussed.
Hirsch, D. R., Dancis, J., & Ward, R. S. (1949). Myotonia congenita. Journal of Pediatrics, 35(6), 760–766. https://doi.org/10.1016/S0022-3476(49)80120-X