Yes, The right and left temporal lobe control mood, emotions, learning, retrieving memories and storing memories, actions, and understanding language. With epilepsy sometime some these functions are only disturbed when having seizure and other functions may be damaged in and out of seizure.

Depending on where your seizures are active , may cause mood swings .

There are also medications that can do the same, from their side effects

Yes

Yes, it's dif per person I think, but does happen, try and not let it get to me or you, my opinion, hang in there and try and stay pos