Table 2

- Clinical characteristics.

Patient/Clinical diagnosis	EEG	Brain imaging	Development
Stroke and epilepsy	Generalized epileptic discharges	infarction, watershed, bilateral parietal occipital	GDD
Infantile spasms, Down syndrome, congenital heart disease	Hypsarrhythmia	Normal	GDD
Dravet syndrome	Generalized epileptic discharges	Atrophy and encephalomalacia post meningitis	GDD
Birth asphyxia. Lennox-Gastaut syndrome	Generalized epileptic discharges	Severe atrophy and hypoxia related changes	GDD
Birth asphyxia	Generalized epileptic discharges	Severe atrophy and hypoxia related changes	GDD
Neurometabolic disease, Dandy–Walker malformation, global developmental delay	Generalized epileptic discharges & encephalopathy	Dandy–Walker malformation and brain atrophy	GDD
Focal epilepsy	Temporal discharges	Normal	Normal
Propionic acidemia, neurodegenerative brain disorder	Encephalopathy	Atrophy	GDD
Neurodegenerative brain disorder	Encephalopathy	Atrophy, white matter abnormalities	GDD
Hydrocephalus, Arnold-Chiari malformation, MMC (Myelomeningocele)	Encephalopathy	Hydrocephalus, Arnold-Chiari malformation	GDD
Chromosomal 18q- syndrom, multiple congenital anomalies	Generalized epileptic discharges & encephalopathy	Periventricular white matter volume loss, corpus callosum hypoplasia	GDD
Infantile spasms, hyperglycinemia	Hypsarrhythmia	brain atrophy, hypoplastic corpus callosum	GDD
Dysmorphic features, caudal regression syndrome	Generalized epileptic discharges	White matter volume loss	GDD
Neurodegenerative brain disease, progression of milestones, hypopituitarism	Focal discharges	Hydrocephalus	GDD
Aicardi syndrome	Hypsarrhythmia	hypoplastic corpus callosum	GDD
NCL	Generalized epileptic discharges	Brain atrophy	GDD
Down syndrome, birth asphyxia	Generalized epileptic discharges & encephalopathy	Hypoxia changes	GDD
Preterm, birth asphyxia	Generalized epileptic discharges & encephalopathy	Brain atrophy	GDD
Birth asphyxia	Encephalopathy	Brain atrophy	GDD
Neurometabolic disease, glutamine synthase deficiency	Encephalopathy	Colpocephaly with dilation of lateral ventricles	GDD
Idiopathic epilepsy	Generalized epileptic discharges	Normal	GDD

*GDD - Global developmental delay, *NCL - neuronal ceroid lipofuscinosis, MMC - Myelomeningocele