As opposed to generalized epilepsy. Potentially associated with a brain lesion (congenital or acquired), but not always. EEG will usually confirm.
Associated with prolonged or focal febrile convulsion – chicken or egg?
See:
Temporal lobe epilepsy
The most common focal epilepsy. Sense of déjà vu, phantom smells, panic attacks as possible aura symptoms! Talking gibberish, lip smacking, staring, posturing are more obvious.
Treatment
Levetiracetam or Lamotrigine first line, the former (Keppra) can be loaded more quickly though.