Hi,
I sometimes have anxiety attacks and I have found out that it happens mainly when I'm under a lot of stress, or if something is bothering me and I haven't spoken to anyone about the problem. This has caused the biggest problem for me when it comes to anxiety attacks so be sure if you're under stress to take it easy or if there's something on your mind to talk to someone about the issue.
In regards to your seizure this sounds like a status sz. to me. I had this happen to me when I was put on neurontin and then I began having absence status sz. where I would have one seizure after another or I would have an absence sz. and be out of it for 30 min. to 3 hrs. I had to go to the hospital once where the Dr. gave me med to bring me out of the sz. After I saw my epileptologist he took me off the drug IMMEDIATELY! This could be the problem that you're having it might be possible that dilantin is causing the status sz. I would speak to your neuro. immediately about this. Here's wishing you well and May God Bless You!

Sue