Hello, I have soreness in the ball of my foot. Upon inspection, there is some dead skin and what looked like something imbedded in the skin. I tried to remove (like a sliver) what I thought was imbedded, but did not find anything. The soreness when I walk has been reduced, but I am not sure I cured the main problem - I just removed a bump of dead skin. Can you tell me what this is? Thanks, Doug