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Tonic neck and upper body flexion in atypical absence seizure (EEG)

A full-blown tonic neck and upper body flexion during sleep, lasting 10 seconds. Widespread biphasic delta transient with superimposed low-amplitude fast activity and evolution with higher amplitude generalized fast paroxysmal activity. (Contributed by Dr. Athanasios Covanis.)

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Associated Disorders

  • Angelman syndrome
  • Atypical benign partial epilepsy
  • Dravet syndrome
  • Epilepsy with myoclonic-atonic seizures
  • Epileptic encephalopathy with continuous spike-and-wave during sleep
  • Guanidinoacetate methyltransferase deficiency
  • Lennox-Gastaut syndrome
  • Prader-Willi syndrome