I’ve had more than 40 kidney stones. The worst event was when 13, 9, 5 and 4 mm stones got jammed together in the ureter and I had a good old fashioned lithotomy with a scar about 8" long on my flank, a drain tube, TWO catheters (a long skinny one up to my kidney and a shorter fat one around it up to my bladder), and 10 days in the hospital. I’ve also had about 4 lithotripsies and enough basket retrieval procedures that I lost count.
But worse (though briefer) than any of those was when I woke up in the operating room near the end of the lithotomy. One nurse said “Hey, he’s waking up!” and another said “Hey, you, go back to sleep, you don’t want to be awake now!” and I thought it funny they both said “Hey” the same way.
But worse (though briefer) than even that was when I got a steroid injection around a spinal nerve root in my lower back. They hit the inflamed root with the needle. This explosion of disturbing pain couldn’t have lasted more than half a second but it left me forever shaken that such sensations are even possible. It’d be like taking somebody with a phobia about matches and throwing them into a volcano.