“…Seizures in BFNIS can be controlled with Na + -channel blockers such as phenytoin and carbamazepine, while they are ineffective for the severe form [ 118 , 119 ]. Some BFNIS patients present with EA either co-occurring with epileptic spells [ 120 , 121 , 122 , 123 , 124 , 125 ] or as the only clinical feature [ 124 , 125 , 126 ]. EA does not respond to Na + channel blockers, suggesting a distinct pathophysiological mechanism, which, however, has not been identified so far.…”