I understand this.

As a kid I had severe mouth and throat ulcers (autoimmune); it happened regularly. Turns out the drive to eat out weighs the pain response.

You can literally learn to bear pain.

I now have palindromic arthritis; this is also an autoimmune disorder. I feel pain in random parts of my body, usually around joints, but other times in the soft tissue. I am in fairly constant pain, but it is like a background level now.

This can be dangerous, it almost killed me earlier in the year, I got a “very nasty pneumonia” (doctors words) and waited too long to go to the hospital. The pain wasn’t that bad…