focal epilepsy

An epileptic attack in which disturbance of cerebral function causes the twitching of a limb, the occurrence of a somatosensory or special sense phenomenon, or a focal disturbance of complex mental functions. Also called cortical epilepsy.

The noun has one meaning:

Meaning #1: epilepsy in which the attack begins with an isolated disturbance of cerebral function (as a twitching of a limb or an illusory sensation or a mental disturbance)
  Synonym: cortical epilepsy