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To the Editor:
—The recent comprehensive review of the literature of myotonia congenita by Jelliffe and Ziegler (The Journal, February 25, p. 555) prompts me to describe a case, seen recently:J. K., a white youth, aged 19, Roman Catholic, born in Syracuse, N. Y., whose parents and a sister, aged 21, are without neurologic or muscular anomalies, and whose family as far as ascertainable is similarly free from any relevant abnormalities, had a tonsillectomy at 7 and was believed to have had some evidence of muscular "stiffness" from infancy. It was recalled definitely that from the age of 4 he tended to stumble and to fall easily. As far back as he can remember he has stumbled if pushed even lightly, or if startled. He has always tended to lose his balance easily. About thirty seconds before he arises from a sitting or lying posture his muscles remain "stiffened."
Bragman LJ. A CASE OF THOMSEN'S DISEASE. JAMA. 1933;100(14):1128. doi:10.1001/jama.1933.02740140052027
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