I don't know much about seizures but I was sure I was having a sort of seizure when i was first diagnosed. I did an EEG which was normal and I couldn't figure out why. I didn't go into a full seizure where i was not conscious, but my eyes would roll back and any flickering lights would set it off. It's another thing that I believe is panic related.
I also don't believe doctors know enough about PD to tell you what real damage it can do.