INS and movement disorder: The symptoms are typically refractory to antiepileptic drugs but respond well to insulin therapy.2,3,13 Nonetheless, it requires sometimes the antiepileptic and neuroleptic drugs in movement disorders.2,3,5,6,17,22 The antiepileptic drugs especially phenytoin may be harmful and inhibit the insulin secretion.2,8 In our series, the anti-epileptic drugs were prescribed in four patients and have in most cases quickly achieved a satisfactory improvement.