I have not posted in sometime but regularly check these boards for information and support. Its reassuring to know that I am not alone in dealing with the aftermath of this difficult syrgery. The most serious problem for me since my January 2009 surgery has been headaches. The device described in these posts is a trial unit used to determine suitability for an implanted neurostimulator. I finished a four day trial yesterday. The results were excellent and I am having the implant done in two weeks. I have tried everything else without success except nerve blocks and botox which my insurance company would not approve. Fortunately they did approve the neurostimulator. Although I sam not thrilled about more surgery, I am excited about the prospect of relief, especially without the side effects of medicine. The trial was easy and the surgery is day surgery. For those of you who have had difficult to treat , severe headaches, this is an option you should at least explore and get more information about. Best of luck to all of you. I will check in with an update on the permanent device. By the way, the device can be removed in the future and is not necessarily permanent.