Focal (or partial) epilepsy involves focal epileptic seizures, i.e. partial seizures (as opposed to generalised epileptic seizures). A partial seizure may extend to a generalised tonic-clonic seizure.
The starting point of partial seizures is located in a cerebral hemisphere.
The different types of focal epileptic seizures
Idiopathic focal epilepsies are different from symptomatic focal epilepsies:
- idiopathic focal epilepsies involve focal epileptic attacks which are not associated with brain lesions. Photosensitive epilepsy, due to long exposure to a screen is an example of this.
- Symptomatic focal epilepsies are classified according to the epilepsy's starting point. Mesial temporal lobe epilepsy for example begins in the internal aspect of the temporal lobe.
Focal (or partial) epilepsy is one of the forms of epilepsy, together with generalised epilepsy. © web-libre.org