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  • Juvenile absence epilepsy - the presence of myoclonic seizures distinguishes juvenile myoclonic epilepsy from juvenile absence epilepsy (with myoclonic seizures exclusionary for juvenile absence epilepsy)
  • Epilepsy with eyelid myoclonias right arrow consider if repetitive, rhythmic, fast >4 Hz jerks of the eyelids, with upward deviation of the eyeballs and with head extension; seizures are very frequent
  • Epilepsy with myoclonic absences right arrow consider if there are 3 Hz myoclonic jerks of upper limbs with tonic abduction
  • Structural brain abnormality right arrow consider if myoclonic or generalized tonic-clonic seizures with focal features seen consistently from seizure to seizure
  • Progressive myoclonus epilepsies right arrow consider if myoclonus is intractable, and there is cognitive decline and slowing of the background EEG
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