Diagnosis:
A type of channelopathy
Diagnosed by clinical features, plus EEG
Genetics:
Autosomal dominant
CHRNA4 chr. 20q13.2, ENFL2 chr. 15q24
Clinical features:
1st & 2nd decades, persist.
Seizures occurring exclusively in drowsiness or sleep.
EEG: frontal origin, clusters. Interictally: normal