Eight years ago, I had saline novocaine trigger point injections in my back. It was the most painful thing that I ever went thru. I would come home crying from the treatment and never get relief. I quit after a bit, because it was just too much to bear. I had the same experience from chiropractors. It was so very painful and I thought it only made things worse......not better.
P.S. It could just be another of those treatments that work on some people and not on others.