Disease or Syndrome
focal seizure
[ foh-kuhl see-zher ]
Definitions related to seizures, focal:
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(focal seizure) A seizure originating in a circumscribed area of the brain.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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(partial seizure) A transitory alteration in movement, sensation or autonomic nerve function due to abnormal electric activity in a localized area of the cerebral cortex, usually without change in awareness or alertness. Symptoms vary with different lesion locations and may include but not limited to the motor (e.g. rhythmic muscle contractions in one area of the body), somatosensory and sensory alterations manifested by abnormal numbness, paresthesias or other hallucinations, including several types of aura; autonomic and psychic symptoms, e.g. with changes in speech, thought, personality, mood, sensation of deja vu or hallucinations.NCI ThesaurusU.S. National Cancer Institute, 2021
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(partial seizure) Any seizure due to a lesion in a specific, known area of the cerebral cortex; symptoms vary with different lesion locations.CRISP ThesaurusNational Institutes of Health, 2006
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(focal-onset seizure) A focal-onset seizure is a type of seizure originating within networks limited to one hemisphere. They may be discretely localized or more widely distributed, and may originate in subcortical structures.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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Focal (or partial) seizures refer to the electrical and clinical manifestations of seizures that arise from one portion of the brain. The EEG typically indicates a localized discharge over the area of onset. Focal seizures most commonly arise from the temporal lobe. Simple partial seizures are those in which consciousness is preserved....Athenahealth, Inc., 2019
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