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Dravet syndrome (polygraphic recording of a convulsive seizure during sleep)

Association of asymmetric tonic-clonic components demonstrating a short hemiclonic seizure are seen in this 7-year-old girl. Onset occurs with a right discharge of polyspikes and polyspike waves. Then, the discharge involves the right hemisphere, spreading to the opposite side. Postictal right depression and slow waves are shown. (Contributed by Dr. Charlotte Dravet.)

Related Media

Associated Disorders

  • Febrile convulsions
  • Severe idiopathic generalized epilepsy of infancy with generalized tonic-clonic seizures