Also in this boat in just the last year or so, I think Aqua 14 is on the right track.
The itching I get isn't really itching even though I'm compelled to treat it like a rash. What I believe it is is nerve damage similar to when you cut off circulation and a body part falls asleep.
Through my own troubleshooting I have discovered that things I did barefoot when younger are no longer permitted. These itching sensations, and localized swelling, show up whenever I sit or stand for more than a moment with isolated pressure on one spot of my foot.
For instance; right now I am sitting in a computer chair with five legs(the chair not me;-). If I pull my bare foot back and let it sit on one of the legs, I will end up with the itching sensation and subsequently the swelling (which feels like I've got a piece of hard candy stuck to the bottom of my foot in that spot when I walk on it).
This will happen to any spot that gets pressure for too long whether in a recliner, at the dining table, on a ladder or whatever. If the pressure is concentrated to one area it will swell and itch.
So far the only time this has happened with shoes on is when I stood on a ladder working in the basement for almost two hours. Both feet took localized hits that day but at 6' and 290 pounds that's a lot of pressure in a small area shoes or not.
The one thing I have discovered is that these trauma episodes seem to have a cumulative effect in that the more I let them happen the easier they come.
So until this condition is identified and treated, I try to keep my bare feet flat on the ground with no localized or uneven pressure.
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