This is a very interesting post. That is a very creative child you have there!

I have had so many different pains in my feet over the years!

Back when I was about 30 and beginning to develop hypothyroid issues, it was pins and needles 1 and spear pain (in the morning).
This progressed to a deep numbness over the years. When I finally found a doctor to correctly address my hypothyroid and give me replacement hormone, the numbness went to pins and needles 2. It took a year, and I was then in pretty good shape.

Then the insulin resistance really took hold after a few years, and burning started. Not quite lava, but close. On a bad day I'd have it running up my legs at night. I still have a small numbness in 2 toes on each foot, but it is not a big thing to me.
I found that eating potatoes was a big factor in the burning. Also MSG in foods. Aggessive use of Benfotiamine, r-lipoic acid,
chiro inositol, chromium, have really helped. (I take other things too, but not to target this specific problem.)
I am now doing l-citrulline and l-arginine and notice my feet are not so cold as they were. (hypothyroid people often have cold extremities and this is hard to control).

I had a root canal a week ago... a slowly dying tooth, that cracked off, and when that was finally done, I noticed that the
brief stabbing pains I was having all over may have been due to the infection from this tooth. I would have a few zings everyday, which moved around, but were not long lasting...maybe 3-5 seconds. I haven't had a "zing" attack since 3 days after the dental appointment. Inflammation is a strange thing...it does things to us and appears differently for many people depending on their individual genetics.