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Clonic and myoclonic seizures (EMG)

Illustrative presentation of EMG recording during various types of seizures, including clonic and myoclonic seizures. Note that the only difference between clonic and myoclonic seizures is that the former are rhythmic whereas the latter are random and irregular. (Used with permission from: Panayiotopoulos CP. A Clinical Guide to Epileptic Syndromes and Their Treatment. Revised 2nd edition. London: Springer, 2010.)

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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