The last thing I remember was the anesthesiologist telling me I may feel "a slight sunburn feeling at site of injection." All I can think of is remembering screaming in pain like I have never experienced in all my life. Yesi was asleep within 30 seconds, maybe less, but I have to have the procedure again and am petrified of that pain. I'm not crazy! I've had surgeries, broken bones etc, this pain was torturous and barbaric. Thank God I fell asleep!!! I have never heard of this before! What happened?? Of note, the iv site looked fine post procedure. It was a small vein in the back of my hand, I know they would have preferred a larger line, but I'm a real tough stick.