A damaged blood brain barrier is the cause of epilepsy in rats.  Peer reviewed science journal reports that a compromised blood brain barrier may indeed contribute to the pathogenesis of focal cortical epilepsy, a common neurological disease.  Read the report [ilink url=”http://www.ncbi.nlm.nih.gov/pubmed/?term=Lasting+blood-brain+barrier+disruption+induces+epileptic+focus+in+the+rat+somatosensory+cortex” style=”tick”]Lasting blood-brain barrier disruption induces epileptic focus in the rat somatosensory cortex.[/ilink]