This is very high on my list.
Breaking ribs last year .. oof painful
i had brain decompression surgery and when I woke up from that, I begged them to kill me. No painkillers helped, i thought I would not make it. I then developed a CFS leak, and had almost zero fluid left. omg worst headaches possible.
I had to have a few spinal taps
done, before they had to replace the dura, give me a shunt , because I rejected it. As I lay unable to move 10% of any body part for ten days, waiting and praying the shunt would work, it finally did. I think I spent May and June in hospital, before I could come home. Worst (be far), pain possible.