I'm feeling itchy around an existing mole. It's not painful, but has burning sensation around it. Is it papilloma or cancer?

Existing mole...black, very light red and thin border,symmetric. around 4mm, little itchy sometimes, sometimes feeling sensations around it when touched. sometimes i feel burning sensations away from it but not around it.....mole is not painful and it does not bleed. no other problem. is it papilloma or cancer??

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