Picture 1. Wakefulness interictal EEG showing occasional
multifocal paroxysmal bursts of high voltage spike-wave complexes.
Stabilization of seizures was not achieved, there were also focal
seizures. Therefore, a second AED, lamotrigine, was added to the
treatment. Regarding the allergic reaction due to lamotrigine, it was
discontinued, and the treatment included acetazolamide. During this
period the EEG findings in wakefulness and post-hyperventilation, showed
occasional multifocal mainly bitemporal bursts of spike-and-waves, while
on sleep EEG revealed occasional multifocal left-sided frontotemporal
and parietooccipital spike-and-waves bursts (see pictures 2, 3,
4).