I heard the duct tape works---and I read in something I trust. I don't remember exactly why
I think it has to do with not letting oxygen get to it. I've got one on the sole of my left foot. It doesn't cause me near the problem Palm has. Mine gets more like a thick callous, which then will put pressure on it and hurt if I step on something. Once the thick skin is removed and it's sanded down it usually takes awhile to come back. Next time I do that I may go ahead and try the duct tape to finish it off.
Think About It