I am sorry you are suffering with withdrawl from gabapentin. It is known to have effects like that. Your doctor can do it slower if you are having terrible trouble. Any kind of seizure is a warning that it is too fast at 400mgs.
I do know about withdrawl. I got off Morphine after many years. It was awful even with the doctors help. If you can be prescribed Klonopin while you are doing this, you will have less jerky movements, and may be able to rest better. I remember just standing in the hall and yelling. I was miserable. Talk to your doctor about coming off this medication slower. Change doctors if you are not being listened to. This has a very huge impact on the quality of our lives. Go ahead and call, be a pest if you have to be, get the help. ginnie