Mine don't, either. Where are yours coming from? I was told mine could be coming from too deep in the frontal temporal lobe to show up on an EEG.
My epilepsy doesn't read on a standard EEG due to the part of the brain they come from.
I have psychogenic non-epileptic seizures which don't show up on an EEG at all. They are caused by stress, anxiety etc. I also have petitmal seizures which do show up on my EEG's when my medication levels aren't where they need to be. For the psychogenic seizures i dont take medication for the petitmal seizures i do. My psychogenic seizures tend to look like grandmal seizures but they aren't.
It's supposed to show up. That's the whole reason they wire you up, right?
I am sorry but I don't know the answer to that