<unk>  <unk>  is a developmental and epileptic encephalopathy (DEE) with onset in the neonatal period or during the first three months of life. It is marked by the presence of<unk>  seizures but multiple seizure types may occur. The electroencephalographic recording is abnormal with a suppression-burst pattern or other significantly abnormal patterns. On most occasions the seizures are drug-resistant. After several months, the seizure pattern may develop into infantile spasms syndrome (West syndrome). The neurological exam is abnormal and there is a significant risk of<unk>  death. Various genetic and metabolic disorders are responsible. At present,<unk>  and Ohtahara syndrome are recorded as distinct patterns in the categorization of epilepsies but both neonatal-onset epilepsy syndromes are considered to be merged in one unique entity. It is a severe type of epilepsy syndrome associated with high level of resistance to treatment and a high risk for cognitive impairment. The<unk>  seizures could be seen in other epilepsy syndromes. Multiple types of childhood epilepsies are usually mentioned as<unk>  epilepsies when the<unk>  seizures are a predominant feature.
Early myoclonic encephalopathy
Wernicke encephalopathy
Post-encephalitic parkinsonism
Powassan encephalitis
Ethylmalonic encephalopathy
Camel spongiform encephalopathy
Glycine encephalopathy
Autoimmune encephalitis