Nerve blocks come in so many different forms. I was so scared the first time I was to get one. As I laid on the table watching this xray machine move my stomach started turning. My doctor informed me I was getting a bee sting. To be honest that was more painful then the actual nerve block.\ When I started getting them they didn't give you anything to keep you calm. Now most pain doctors will have you take something before you go in or when you get there they will sedate you so you don't feel anything. Your pain will increase for a few days after the injection but normally you will find some relief for a few months. So if they offer it to you its worth a try. It made it so I went from taking 6 tablets of pain meds down to taking 1 or maybe 2 a day for 3 months.