Jamsie,
Although they show promise, neither Deep Brain Stimulation (DBS) nor Occipital Nerve Stimulation (ONS) are ready for prime time. The success rate in preventing and controlling cluster headaches for either of these two very invasive neurosurgery procedures is spotty at best between 10% and 20%.
On top of that there's a very significant expense in out of pocket money over and above medical insurance, time, and lots of discomfort between cluster headaches that make the risk reward ratio for either of these two procedures unfavorable to all but the most determined cluster headache sufferers with the money and discipline to try them.
These aren't my words. They come from Michael Berger, a.k.a. Wildhaus here on CH.com. He chronicled his experiences with ONS in a lengthy thread you can read at the following link:
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Michael is a dear friend and colleague. I've visited with him and his beautiful family in Wildhaus, Switzerland on many occasions both before the ONS surgery and after. What I can tell you at this point is even two years after the ONS surgery, Michael and I would frequently meet at his oxygen therapy system in the middle of the night to abort our cluster headaches.
If you haven't tried oxygen therapy, see your PCP or neurologist and ask for a prescription. If you've already tried oxygen therapy and didn't find it effective in aborting your cluster headaches in an average of 7 minutes or less, read the material in the "Oxygen Info" tab highlighted in yellow at the left.
If you've gone through these links and are still having problems aborting your cluster headaches with oxygen therapy, shoot me a PM. I'll be happy to work with you.
Oxygen therapy is the safest, most effective, and least expensive abortive available to cluster headache sufferers.
CH'ers who use oxygen therapy at flow rates that support hyperventilation and follow the procedures correctly, enjoy a 99% success rate with this method of oxygen therapy.
We've also found that even using high enough flow rates, the right equipment and proper procedures, there can still be occasions when abort times are longer than usual or so long it appears this method of oxygen therapy isn't working. When that happens, there is likely a good reason or reasons.
The following two links will take you to posts that discuss why this can happen and what you can do to improve the efficacy of oxygen therapy.
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Hope this helps.
Take care,
V/R, Batch