I have a mark on the back of my right foot, just above the heel. The mark is at an angle (not straight up & down) and is approximately one-half inch long; it is under the skin and looks like a scuff mark or a mark that was made with a marker, almost bruise-like. However, it is not a bruise (I did not hit the back of my foot) and there is no pain associated with it
See original here:
Mark Under the Skin
