non-neonatal early infantile epileptic encephalopathy
Non-neonatal early-onset epileptic encephalopathy is a form an of age-related epileptic encephalopathies, characterized by the onset of seizures later than the first 4 weeks of life but within the first three months. Seizures can be generalized or lateralized, independent of the sleep cycle and can occur multiple times per day, leading to psychomotor impairment and death.