It has occurred to me that in terms of temp control I have vaguely the same thing – I had very serious heat stroke about 25 years ago and at the time I was I told I would never feel temperature, especially heat, the same, which at the time I disregarded as crazy, but it’s been true.
When I get hot (any outside temp over about 80 degrees) I get HOT. I’m always in danger of heat stroke again and have to be aware of my surroundings. I also don’t feel cold as I should, just the other day when we were having a Polar Vortex in my area and the wind chill was negative 70 I gave myself a spot of frostbite on the tip of my finger getting gas. Stupid. But I never noticed the cold.
So, the fact that I have these issues from a non-invasive event makes me thing temp control issues after an invasive event would not be unusual.
At the end of the day we simply don’t understand how the brain works.
As Merl mentioned, I think your best bet is going to be self-management. And do, please, take it seriously, take it VERY seriously if you ever get hot enough to stop sweating as that’s the early sign of heat stroke – and heat stroke really has very little to do with external heat, it’s how you body is processing the heat internally.