Difference between revisions of "Benign Myoclonic Epilepsy in Infancy"

From EEGpedia
Jump to: navigation, search
 
(One intermediate revision by the same user not shown)
Line 12: Line 12:
 
* Photosensitivity in 20% of the patients  
 
* Photosensitivity in 20% of the patients  
 
* Unexpected acoustic or tactile stimuli can elicit a the myoclonic jerks in 10%.
 
* Unexpected acoustic or tactile stimuli can elicit a the myoclonic jerks in 10%.
 +
* During sleep in most of the patients the myoclonic seizures persists
  
 
==Treatment==
 
==Treatment==
Line 18: Line 19:
  
 
==EEG==
 
==EEG==
* '''Inter-ictal''': Sometimes generalized [[Spike slow wave complex]] or [[Polyspikes slow wave complex]]
+
* '''Inter-ictal''': Usually normal, sometimes generalized [[Spike slow wave complex]] or [[Polyspikes slow wave complex]]
 
* '''Ictal''': Brief generalized [[Spike slow wave complex]] or [[Polyspikes slow wave complex]]
 
* '''Ictal''': Brief generalized [[Spike slow wave complex]] or [[Polyspikes slow wave complex]]
* During sleep in most of the patients the myoclonic seizures persists
 
 
* Sometimes photosensitivity
 
* Sometimes photosensitivity
 
* Normal background rhythm
 
* Normal background rhythm

Latest revision as of 22:52, 8 June 2018

Background

  • One of the idiopathic generalized epilepsies
  • 1% to 2% of epilepsies that start before the age of 3 years
  • Seizures start between 0.5 and 3 years of age in developmentally normal children. However, some cases have a later onset up to 4 years
  • A family history of febrile seizures and epilepsy is often reported
  • Remission usually occurs within 1 year (6 months to 5 years) from onset.
  • The outcome is generally benign. In rare cases, myoclonic epilepsy such as Juvenile Myoclonic Epilepsy may follow Benign Myoclonic Epilepsy in Infancy

Clinic

  • Myoclonic jerks involving mostly the upper part of the body, singular or clusters
  • Consciousness is normally intact
  • Photosensitivity in 20% of the patients
  • Unexpected acoustic or tactile stimuli can elicit a the myoclonic jerks in 10%.
  • During sleep in most of the patients the myoclonic seizures persists

Treatment

  • Valproic acid was effective in 23 of 30 treated patients [1]
  • Patients with acoustic and somatosensory evoked myoclonic seizures may not need treatment.

EEG



5 year old girl with 3 Hz generelized polyspike waves and myoclonic jerks (double banana and EMG on deltoid muscle)

5 year old girl with 3 Hz generelized polyspike waves and myoclonic jerks (double banana and EMG on deltoid muscle) EEGpedia.png




Notes

  1. Auvin, S. , Pandit, F. , De Bellecize et al, Benign Myoclonic Epilepsy in Infants: Electroclinical Features and Long‐term Follow‐up of 34 Patients. Epilepsia, 2006 47: 387-393. doi:10.1111/j.1528-1167.2006.00433.x