Over the years, on and off, I have suffered from sore balls to my feet. The skin is thickened and tough, but the soreness is much deeper down towards the outside of my feet. I get occasional waves of burning sensation while I'm inactive and it's uncomfortable to get going at the beginning of a run. The entire balls are swollen (not just skin, but bone?), increasing the depth of my feet at that point. Could they be bunnions? Any ideas or advice out there?