How to get rid of keloid on monroe piercing?

Injections first: If you have a true keloid scar the best first line treatment is steroid injection. If that fails to improve the keloid to your satisfaction the next option is excision which comes with very high recurrence rates (and can come back worse than the original) and a postop regimen of silicone, pressure, and in severe cases even radiation treatment. I would suggest removing the jewelry if treating it.

Remove/steroid/press: Remove the piercing, consider steroid injections and then apply localized pressure and massage with silicone gel sheeting.