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Myoclonic absence seizures of structural cause

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Myoclonic absence seizures of structural cause (video-EEG)

Video EEG recorded typical myoclonic absence seizures in a patient aged 15 months. Clinically, there were rhythmic and symmetrical violent myoclonic jerks, mainly of the arms, coinciding with the multiple spike components. Note the regular 3.5-Hz multiple spike-and-slow wave discharge smoothly slowing down to 2.5 Hz. There is also a discharge discontinuation that is rare in childhood absence epilepsy. (Used with permission from: Panayiotopoulos CP. Perioral myoclonia with absences. In: Panayiotopoulos CP, editor. The Epilepsies: Seizures, Syndromes and Management. Oxford: Bladon Medical Publishing, 2005:324-7.)

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Associated Disorders

  • Angelman syndrome and other chromosomal disorders
  • Dravet syndrome
  • anoxic and toxic encephalopathies
  • febrile seizures
  • metabolic disturbances
  • myoclonic-atonic epilepsy
  • progressive myoclonus epilepsies
  • pyridoxine dependency in infants