Demorier has it right - my heart attack in 2001 resulted in the worst pain I EVER experienced - like a 16-penny spike being driven right through my sternum and deep into my chest - left me gasping to breathe, I could only speak single words. Turns out my left anterior descending cardiac artery was plugged 100%, I got to the ER at Tulane U. Hospital in NOLA after about 20 min or so but still have a 30% loss of heart function. Had a pacemaker/defibrillator implanted back in June. At Tulane, they gave me morphine and one other med that had absolutely no effect whatsoever, the pain just kept increasing - a nurse in the ER swam into view and told me to lift my tongue, she squirted some nitro in there and like magic the pain went away. THEN, the other stuff kicked in and I went to la-la land. I've had no issues with pain since then but that's my gauge for pain severity - everything's compared to that MI. What really bothers me is my spouse who has an excruciating back pain issue right now causing her great distress. Her spine gets twisted out of shape due to the muscle spasms involved. They run right down her left leg into her left calf. I know it's her sciatic nerve, I can trace the pain by prodding at several places following the course of this nerve down the leg. She had a fall in metro Chicago years ago where she went straight down on some icy pavement, we know that's the cause. My own periodic back pain comes from pulling a decedent out of a car on a cold November morning north of Chicago. We had to break some of her bones to make it happen, but she got her revenge because my back pain and muscle spasms sometimes give me scoliosis. It takes the least little improper movement to make it come back, too . . .