Dignostic blocks are usually done before ablation is. It confirms that the pain is actually coming from where they think it is. If they use steroids, they can calm the inflamation some. After I had my second direct block to the occipital nerve, I did get some extended relief from the ON. I've been told that pulsed frequency is the way to go with ablation, but insurance in the States is an issue. Ask your doctor about it in your country and given your health care is national, I think. I was told the muscles are the issue with mine, but I've had RFA to the upper cervicals and it still hasn't alleviated the ON. I'm sure it is adding to it, but they don't like to do RFA to C2 and the base of the skull. I guess its too easy to get unwanted results that high up. So, thats all I know so far, which really isn't much. Good luck with your treatment and post how it all goes.