@penguin @NotoriousDOG @Dudebro @The_Almighty_Kek Not to be the "ackshually" guy, but...

In the case of my relative, it's caused by inflammation, temperature, changes, etc. on the nerve endings that are left. That inputs pain signals from where the nerve used to run (ie lower leg). Nerve cutting/deadening *might* help, but it might also distort his already fucky sense of balance so he's never done it.