3、%)showedtypicalECGofhypokalemiaincasestestedforThehighrateofperiodicparalysiswassecondarytoGraves'sdiseaseinourstudy.SomepatientswithperiodicparalysismayoccurwithhighlevelofserumCPKandnormalorhighdeeptendonreflexes.Keywordsperiodicparalysis; hyperthyroidism; hypokalemia; creat