Intermediate
Technical
In the Industry Vocabulary Test
Focal seizure
Seizure originating from a localized brain region.
Full Definition
Focal seizures, previously termed partial seizures, arise from a specific cortical area and may remain localized or spread to other brain regions. The 2017 ILAE classification system emphasizes focal seizures can occur with or without impaired awareness, replacing the older simple/complex partial seizure terminology. Editors must recognize this updated classification system and ensure consistent use of current terminology in epilepsy literature and patient documentation.
Usage
Usage note: Current preferred terminology over 'partial seizure' per 2017 ILAE classification.
In Context
- "The patient experienced focal seizures with impaired awareness originating from the temporal lobe." — Neurology consultation
- "Focal seizures without impaired awareness manifested as right-hand twitching." — Seizure semiology report
Also known as
partial seizure
localization-related seizure
Contrasted with
generalized seizure
Don't confuse with
complex partial seizure