The worst pain I've experienced was emotional. My mother was dying of breast cancer that had spread throughout her body--namely, her brain. We had her set up with in-house hospice care--basically, the hospice workers were on call if we needed them. I was on duty that morning, and had gotten up to give her the anti-inflammatory medicine for her brain. I found her lying in her bed, alive, but staring blankly at the ceiling, her head nodding, and her body cold as ice.
By the time I'd finished frantically shaking her and calling her name, my brothers were behind me, pulling me away. I heard the famous death-rattle coming from the bed, and then she was gone. I'll never forget how cold she was or the sound she made before the end. No amount of therapy will erase that.
I know that this not technically what the OP had in mind...but nothing I've experienced compares to this incident.
By the time I'd finished frantically shaking her and calling her name, my brothers were behind me, pulling me away. I heard the famous death-rattle coming from the bed, and then she was gone. I'll never forget how cold she was or the sound she made before the end. No amount of therapy will erase that.
I know that this not technically what the OP had in mind...but nothing I've experienced compares to this incident.