Corn: This is a corn with the black dot indicating that the rubbing caused some bleeding to the toe and under the thick skin or corn. This is an easy and painless fix for any podiatrist. You will be on your feet quickly.
Answered 3/23/2019
5.5k views
Dried blood: The black dot is probably dried blood. See a podiatrist for treatment and suggestions to stop the toes from rubbing.
Answered 10/23/2012
5.5k views
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