I read your post and it really hit home for me. You sound like a male version of me. May I ask how old you are?? It is scary how much you have stated things exactly how I have analyzed them for myself. I would like to talk with you more, perhaps in chat. I am often found in the chat rooms, if you have time.
My neurologist said that mood problems such as anxiety, depression (even some psychotic features) can be caused by epilepsy. She said it is very common to have them misdiagnosed as psychiatric disorders (such as Generalized Anxiety Disorder, Major Depressive Disorder, etc.) when the doctors don't suspect epilepsy. The EEG can tell them for sure if it's epilepsy (but it doesn't always) - mine did without a doubt though. She did recommend that people with mood problems caused by epilepsy do have a psychiatrist on their team because of the risk of depression/suicide.
Wish you luck