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Myoclonic epilepsy in infancy or childhood (EEG)

Note in EEG (a) fragmented generalized spike-and-wave and EEG (b) generalized 3 Hz mainly slow-wave discharges during sleep, with no concomitant clinical events recorded. Ictal-EEG (c) shows hyperventilation. During the evoked generalized spike-and-slow wave discharge, eyes opened with the head slightly turning back (first arrow) and after about half a second closed again (second arrow). (Contributed by Dr. Athanasios Covanis.)

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Associated Disorders

  • Absences with single myoclonic jerks during the absence ictus
  • Childhood absence epilepsy
  • Eyelid myoclonia and (with) absences (Jeavons syndrome)
  • Facial (perioral or eyebrow) myoclonia and absences
  • Generalized tonic-clonic seizures
  • Juvenile absence epilepsy
  • Juvenile myoclonic epilepsy
  • Myoclonic absence epilepsy
  • Phantom absences
  • Symptomatic and cryptogenic absences
  • Typical absences with specific modes of precipitation (reflex absences)