@msvjv
Depends what may be injected: Steroids or an analgesic?
As you can imagine, it doesn't tickle! lol But compared to other injections in the back or neck, it is one of the 'better' ones. I have always found steroids to be the ones that are 'stingy'.
Of course, the skill of the person doing the injection is very important, but the specialists doing this kind of work are so highly skilled, they are masters at this.
Stay relaxed, keep your muscles calm. The possible results are so beneficial that a second of soreness or discomfort is well worth it.
I get multiple shots in my neck, lower back and hips); I'd say that the hips are the easiest. After my treatment, my 'driver' and I go through a McDonalds for a celebratory coffee!
Hopefully, the results are exactly what you want to discover.
All the best to you. Let us know how you get on.