Pediatric Neurology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
SUDEP SUDEP
Sudden unexpected death in epilepsy, referring to the sudden death of someone with epilepsy who was otherwise healthy.
electrocorticography
Direct recording of electrical activity from the surface of the brain using electrodes placed on the cortex during surge...
electrodecremental response
A sudden reduction or flattening of EEG activity during epileptic spasms, typically seen in infantile epilepsy syndromes...
electroencephalogram
Non-invasive test that records electrical activity in the brain using electrodes placed on the scalp.
encephalitis
Inflammation of the brain tissue, often caused by viral infections, autoimmune conditions, or other inflammatory process...
epileptic encephalopathy
A condition where epileptic activity itself contributes to severe cognitive and behavioral impairments beyond what might...
epileptic spasms
Brief, symmetric contractions of axial and limb muscles occurring in clusters, typically in infancy.
external ventricular drain
Surgically placed catheter that drains cerebrospinal fluid from brain ventricles to an external collection system.
febrile seizure
A seizure occurring in children between 6 months and 5 years of age associated with fever but without evidence of intrac...
febrile seizure plus
Febrile seizures that extend beyond typical age limits or occur with low-grade fever, often indicating genetic predispos...
FIRES
Febrile infection-related epilepsy syndrome, a rare condition where previously healthy children develop refractory statu...
focal cortical dysplasia
A localized malformation of cortical development characterized by abnormal neuronal organization, often causing medicall...
focal seizure
A seizure that originates in a localized area of the brain, previously known as partial seizure.
functional hemispherectomy
Surgical procedure that disconnects one brain hemisphere while leaving most tissue in place.
gelastic seizure
A rare type of seizure characterized by inappropriate laughter or giggling, often associated with hypothalamic hamartoma...
gelastic-dacrystic seizures
Seizures characterized by inappropriate laughter (gelastic) or crying (dacrystic), often associated with hypothalamic ha...
Glasgow Coma Scale
Standardized neurological scale used to assess level of consciousness in patients with brain injury.
hemimegalencephaly
A rare malformation characterized by unilateral overgrowth of one cerebral hemisphere, often associated with intractable...
hemiplegic migraine
A rare form of migraine with aura characterized by temporary weakness or paralysis on one side of the body during the at...
hemispherectomy
A surgical procedure involving functional disconnection or anatomical removal of one cerebral hemisphere to treat intrac...
hemispherotomy
A modified surgical procedure that functionally disconnects one cerebral hemisphere while preserving brain tissue.
HIE
Brain injury in newborns caused by lack of oxygen and blood flow to the brain during the perinatal period.
holoprosencephaly
A severe brain malformation where the forebrain fails to divide into distinct hemispheres, often associated with midline...
hydrocephalus
Accumulation of excess cerebrospinal fluid within the brain's ventricular system, causing increased intracranial pressur...
hypotonia
Decreased muscle tone characterized by reduced resistance to passive movement and increased joint mobility.