Partial (focal) seizureDefinition:
All seizures are caused by abnormal electrical disturbances in the brain. Partial (focal) seizures occur when this electrical activity remains in a limited area of the brain. The seizures can sometimes turn into generalized seizures , which affect the whole brain. This is called secondary generalization.
Partial seizures can be divided into:
- Simple -- not affecting awareness or memory
- Complex -- affecting awareness or memory of events before, during, and immediately after the seizure, and affecting behavior
Focal seizure; Jacksonian seizure; Seizure - partial (focal); Temporal lobe seizure; Epilepsy - partial seizures
Partial seizures are the most common type of seizure in persons 1 year and older. In persons older than 65 who have blood vessel disease of the brain, partial seizures are very common.
Persons with complex partial seizures may or may not remember any or all of the symptoms or events during the seizure.
Depending on where in the brain the seizure starts, symptoms can include:
Other symptoms may include:
- Blackout spells -- periods of time lost from memory
Changes in vision
- Sensation of déjà vu (feeling like current place and time have been experienced before)
Changes in mood or emotion
- Temporary inability to speak
For information on diagnosis and treatment, see:
Abou-Khalil BW, Gallagher MJ, Macdonald RL. Epilepsies. In: Daroff RB, Fenichel GM, Jankovic J, Mazziotta JC. Bradley's Neurology in Clinical Practice. 6th ed. Philadelphia, Pa: Elsevier Saunders; 2012:chap 67.
Wiebe S. The epilepsies. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, Pa: Elsevier Saunders; 2011:chap 410.
|Review Date: 2/20/2014|
Reviewed By: Joseph V. Campellone, M.D., Division of Neurology, Cooper University Hospital, Camden, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997-
A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.