Has anyone had this done I don't know what is called all I know is they are using something like when you get your teeth pulled. Injections in neck its going to numb nerves to see which are causing me problems. the esi injections didn't work so now they are doing these. I must say I'm not looking forward to having more needles stuck in my neck but wanting pain relief without taking pain meds on a daily basis. I wish I could remember what it's called oh well brain fog is lovely well have a nice day