Prevents naked short fraud and manufacturing shares that they can locate at a later date.

Maybe with a schema that allows a one time verify, and then churns your entry. If that verify occurs upon entry synchronously at the time you vote, if possible, that’d be no less safe than the paper ballot you feed into the machine.

This is the exact use-case for a blockchain, a public immutable ledger where you can validate your vote, but nobody can tie it back to you.

Aside from some over the counter numbing creams and surgery there is nothing to be done by a doctor anyway. At best you can massage it gently in a shower or bath. You didn’t say how long you’ve had it, but it takes weeks to reduce. Just tell them if you feel you must, there is no magic way to say embarrassing things except for practice doing so.