It is a type of seizure triggered by abnormal electrical activity focused in a small area of the brain.
In some cases the cause is unknown but it has been described in association with: trauma, infections, neoplasms, genetic alterations and toxins.
Symptoms depend on the area of the brain affected: repetitive movements of an area of the body, nausea, behavioural disturbances, alterations of the senses, sensations of movement or falling, sensation that the environment is not real, sensations of distortion of space, false sensation of having lived in the moment and sudden difficulty in speaking. It differs from complex partial seizures in that it does not cause loss of consciousness.
It is diagnosed by clinical questioning, complete physical examination and electroencephalogram.
The cause should be treated early, in addition to using specific epileptic treatment. Sometimes childhood epilepsies are cured spontaneously by puberty.
- Angus Wilfong, MD. Seizures and epilepsy in children: Classification, etiology, and clinical features. UpToDate. Sep 30, 2016.
- Fisher RS, Acevedo C, Arzimanoglou A, et al. ILAE official report: a practical clinical definition of epilepsy. Epilepsia 2014; 55:475.
- Korff C, Nordli DR Jr. Do generalized tonic-clonic seizures in infancy exist? Neurology 2005; 65:1750.
- Selim R Benbadis, MD. Localization-related (focal) epilepsy: Causes and clinical features. UpToDate. Apr 01, 2016.
- Lowenstein Dh. Convulsiones y Epilepsia. Harrison. Principios de Medicina Interna. Volumen 2. 19º Edición: 2542-2559.

