Basically, if I wear certain shoes or rest either foot
in certain ways, I get what feel to me to be small lumps
on the arch or ball of my foot. They are moderately painful, particularly in bare feet, but are not visible to the naked eye. Occasionally, a "big" one will feel, if I push with my hand, like a small lump of fluid. I can make them occur if I push my foot for, say, 30min, against the crossbar of a chair, or for walking around in certain (previously comfortable) shoes.