I am healthy 41yo male who has L5-S1 Disc herniation (acute stage Jan 11 2014) with left nerve root compression. I had an epidural today and during advancement of the catheter I felt a blast of the most intense pain I have ever experienced. This was never discussed as an experience to expect during an epidural when prepping for the procedure. The physician said it was unfortunate that I experienced this but the medication was delivered to just the right place and due to the inflamation I may have experienced this pain along with the fact that alot of medication was placed in a small space. I asked and re-asked why I experienced this because I dont believe the answer I got was correct. Something wasnt right and the only thing I can think of was that I was not given an adequate amount of lidocaine and thus felt the insertion if the catheter and deployment of medication. Does this sound correct or could something else have happened? I never want to experience that kind of pain ever again or have anyone experience this. Could an expert on this site please provide an explanation? I have no increased neurological deficits, in fact it seems as though I have improved some but I cannot ever experience that kind of pain voluntarily ever again. Please help.