Thirteen days ago on November 22, 2019, I had these strange circles on the thumb side of my right forefinger. They are exactly where the finger presses against a coffee cup finger-loop, so lately I have been drinking my coffee with the middle finger doing the lifting.
It is photographed in strong side light to show the details better. It doesn’t hurt anymore and never did get red from infection.
I worried a bit that it might be an insect laying its eggs in my flesh, but nothing came out.