I don't know what they would be looking for that would cause hallucinations, a brain tumor? That's all I can think of but surely there are other things. Maybe for me they are looking for enlarged ventricles. I'm just not sure.

But it sounds like a good idea for you to get a brain scan in case it's a neurological problem and not mental illness related. Do you get all of the symptoms of sza or just hallucinations?

I don't get delusions (that I know of, if I do they are subtle enough that no one has picked up on them) I just get mania depression and hallucinations (now between episodes). I probably would have been having hallucinations before if I had ever been between episodes or it i hadn't been on 3 antipsychotics. I don't know for sure though.