There is a genetic predisposition in certain lines of BEW's of any breed. The gene responsible links up with the vienna white gene and can remain linked in rabbits with a background of blue eyed whites, even if they are particolors. Often, the seizures are set off by loud, sudden noises or sudden movements. However, I've seen some rabbits that appear to have seizures which actually, are not seizures at all. They will get quite excited and often panic when this happens.
Rabbits have a poor gag reflex.
My doe is an English Spot, and has had this problem for 3 of the 4 years of her life. At first I was very concerned, and I had her to the vet several times, and we put her on phenobarbital. Well, after awhile, we decided to try a natural remedy instead, since the prescription medication did not stop the seizures anyway. We use a product called Calming Essence, and it is an herbal remedy for humans. The dose for a rabbit is only a drop of two, and it really works to calm them down.