Term information
- MSH:D012640
- UMLS:C0751495
- SNOMEDCT_US:29753000
Partial seizures can be classified as simple (consciousness is maintained) or complex (consciousness is impaired or lost).
Seizures of which initial semiology indicates, or is consistent with, initial activation of only part of one cerebral hemisphere.
Focal seizure
Seizure affecting one half of brain
Focal seizures
Focal-onset seizures
Partial seizures
Focal seizures are conceptualized as originating within networks limited to one hemisphere. They may be discretely localized or more widely distributed. Focal seizures may originate in subcortical structures. For each seizure type, ictal onset is consistent from one seizure to another, with preferential propagation patterns that can involve the ipsilateral and/or contralateral hemisphere.