%0 Case Reports %T A Rare Case of Peripheral Nerve Hyperexcitability in Childhood: Isaacs Syndrome. %A Kanmaz S %A Özcan M %A Şimşek E %A Serin HM %A Aydogdu İ %A Gökben S %A Tekgül H %J J Pediatr Neurosci %V 15 %N 2 %D Apr-Jun 2020 %M 33042252 暂无%R 10.4103/jpn.JPN_128_19 %X Isaacs syndrome is rare disorder with peripheral nerve hyperexcitability syndromes with acquired neuromyotonia in childhood. We present a 13-year-old girl with muscle stiffness and neuromyotonia diagnosed Isaac syndrome with spontaneous discharge potentials on motor unit in electromyography and the diagnosis supported by the presence of antinuclear antibodies. A successful treatment was obtained using low-dose carbamazepine. Cause of Isaacs syndrome is unknown, generally thought to be an autoimmune etiology with voltage-gated potassium channelopathy; it sometimes occurs as a paraneoplastic syndrome. Early use of electromyography has critical role in the differential diagnosis with certain muscle disorders and peripheral nerve hyperexcitability syndromes.