My Physical med doc thinks I should try them. He thinks one set of shots in my case would be like a reset button. I have had mostly 6-10 level headaches fort going on 15 months. My headache doctor is not opposed to trying it, but there are a few other meds he thinks I must try before insurance will cover it.. he also said there is no studies to show how well it helps PCS patients, and most certainly would not be a reset button. So looks like if I get them it will be 4-5 months down the road. I did find a blog of regular migraine patients who did receive injections comments. I will post a link for you if you like. They go back over several years.