It could be a wart, or perhaps a mole--I can't tell from the photo. My best guess is that it could be removed in one visit. The fee might be $1-200. I don't recommend any over-the-counter treatments, since we don't know what you're treating. If it is a wart, and the doctor takes it off, you should suffer no permanent hair loss.
Best.
Dr. Rockoff
I appreciate your professional opinion but I must say that I'm surprised to hear:
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a.) 20x and 400x microscopic photos are inconclusive
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b.) a 1cm PINK lesion with "tentacles" could be a mole
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I thought the primary characteristic of moles was their concentration of melanin, e.g. dark(er) coloration.(?)
http://SSL7.com/users/dermaquery