It seems a couple of years ago now, maybe more, when I first noticed what appeared to
be a small blister or callus on the ball of
my left foot
. I can't remember how
long it was before the second one appeared close beside it, but both have become a permanent feature of the underside of that foot for so long now that I take them for granted.
What's perplexing, though, is that they are seemingly NOT blisters or calluses, because once they come in they are permanent and unchanging.