Concerning the doctor who drilled a hole in the nail, it works.

I once was in the same situation. I was sitting at the kitchen table with ice on the finger and watching the nail turn black. Also on the table was a small (1/8 inch) drill bit I had bought previously that day. I took the drill bit between my thumb and index finger and set it over the darkest part of the nail. I turned the drill bit between my fingers and applied very gentle pressure against the nail. That way there was almost no pressure on the nail when the bit pierced through. I stopped the second blood appeared. I drained the area and then applied hydrogen peroxide and a Bandaid. I saved the nail and the pain disappeared immediately. A new drill bit is sharpest and cut with little or no pressure.