I have those inserts in all my shoes. Wouldn’t even have been able to walk without them for the last ten years. (Heel pain, back pain, and pain on ball of foot - all got better with different shoes, and inserts).
This is new problem. I think it may be neuropathy. It doesn’t seem to matter whether I am walking, standing, or sitting.
I have numbness now on the bottoms of both feet. Doc says it’s lower back related.