please ask for a brain scan xxxxx
Hello~
I am so sorry your dad is having these issues. I highly suggest seeing a chiropractor, he may have some pinched vertebrae in his neck, sometimes when this is the case, unexplainable seizures can occur. He/she will take an x-ray of the neck and be able to determine almost immediately if this is the case, a few adjustments should help a great deal.
I hope he gets better.