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Juvenile myoclonic epilepsy

Other Names for this Disease
  • EJM
  • Janz syndrome
  • JME
  • Myoclonic epilepsy, juvenile, 1
  • Petit mal, impulsive
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Juvenile myoclonic epilepsy is an epilepsy syndrome characterized by myoclonic jerks (quick jerks of the arms or legs), generalized tonic-clonic seizures (GTCSs), and sometimes, absence seizures.[1] The seizures of juvenile myoclonic epilepsy often occur when people first awaken in the morning, especially if they are sleep-deprived. Drinking alcohol and psychological stress may also make these seizures more likely.[1][2] Onset typically occurs around adolesence in otherwise healthy children.[1][2][3] The exact cause of juvenile myoclonic epilepsy remains unknown.[1] Although patients usually require lifelong treatment with anticonvulsants, their overall prognosis is generally good.[1][3]

Last updated: 1/20/2009


  1. Cavazos JE, Lum F. Epilepsy, Juvenile Myoclonic. emedicine. November 29, 2007; Accessed 1/19/2009.
  2. Adamolekun B. Seizure Disorders. The Merck Manuals Online Medical Library . March 2008; Accessed 1/19/2009.
  3. Epilepsy Syndromes. Epilepsy Foundation. Accessed 1/19/2009.
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