Landau-Kleffner syndrome versus ECSWS

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Landau-Kleffner syndrome versus ECSWS

EG aspects Landau-Kleffner syndrome ECSWS
CSWS 80% 100%
Main spike localisation Temporal Frontal
Clinical aspects
Seizures Three-quarters of patients All patients
Symptomatic causes Rare (~10% abnormal MRI) One third (~33% abnormal MRI)
Primary language impairment Verbal auditory agnosia Expressive >receptive aphasia
Psychomotor/behavioural deficits Common (45%) Nearly all (95%)
Onset of cognitive impairment Verbal auditory agnosia Global
Prognosis Half reach near-normal life One-quarter reach near-normal life

Source:Panayiotopoulos CP. The Epilepsies: Seizures, Syndromes and Management. Oxfordshire (UK): Bladon Medical Publishing; 2005.

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