re: what causes epilepsy?

I'm not sure if I really understand what was wrtten, but I have a 25 yr old son that was involved in a Motor Vehicle accident 2 yrs ago & has a severe brain injury...he is unable to walk, talk, & is fed via PEG because of his inabliltiy to swallow - After watching an episode of 60 Minutes re; the medication Ambien & it's ability to help another brain injured young man, we gave my son Ambien & he spoke for the first time in a year and a half....it only last about an hour, but he also is able to swallow & eat and tries his best to stand & his spasticty lessons.....Just last week he was given Ativan in the Emergency Room to relax him after he pulled out his feeding tube & instead of relaxing him, he became animated & spoke & ate for over 8 hours...I really don't read this type of medical literature well, but from what I gather it appears that GABA has something to do with both of these medications..

My question since reading your article is, could my son, David, possibly benefit from some type of anti-seizure medication? i know most people w/brain injury take seizure medication, but since David has not shown to have seizures (that we have been able to see) he was never put on anti-seizure medication...I'm afraid to give him the Ativan and I give him Ambien every day, but it is so short acting...Do you have any thoughts on this???

thanks,
David's mom, Brenna