I do have 'fatigue foot'! (Not the swelling although) My foot spa is put to use often when I start to feel tightness or tiredness. Calluses became a problem during Covid which has me thinking, do they correlate? Foot massages or a Foot Spa machine is helpful to an extent. But try seeing a Podiatrist to assist you with that! Does temperature effect also? Just curious. I hope you get to handle that soon.😎