is surgery the right decision?

Hello to everyone!

I am a new to this.

My dad has suffered with epilepsy for as long as he can remember and has just found out that he was born with it. He has also been told he is a candidate for surgery (left temporal lobe). He is still in the process of deciding whether or not he wants the surgery. However, I was just wanted to know if anyone could tell me the possible side effects and the extent at which they can occur?

Wshing you all the best!

- a concerned daughter