title: A myotonic syndrome associated with Klinefelter's syndrome.
mesh_terms: D000328:Adult; D006801:Humans; D007713:Klinefelter Syndrome / Q000150:complications*; D008297:Male; D009222:Myotonia / Q000150:complications* / Q000175:diagnosis / Q000235:genetics; D009224:Myotonia Congenita / Q000175:diagnosis; D009223:Myotonic Dystrophy / Q000175:diagnosis