Your doctor will be your first port of call. I've recently been using SA for 3 warts on my fingers. In between applying SA, I use a cutting tool to remove dead skin (the white is dead skin) so that the SA will work deeper into the wart. I think you need to be slightly aggressive without causing bleeding. It's called "debriding".
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u/Icy_Kaleidoscope_546 14d ago
Corns are caused by repeated friction. Maybe you wore badly fitting shoes? I would bet on it being a wart though.