Thanks for the question. I do agree with the answers posted by Dr Winston and Dr Ethan that intra-lesional steroid injections (injecting directly into the keloid) would be the most suitable treatment to reduce the size and thickness of the keloid. Several monthly injections will be needed. The initial injections may be a little more painful but the pain is usually better with subsequent injections.
There will be some pain with the injection but this is usually bearable. If you are really afraid of the pain, applying some numbing cream prior to the injection may help.
Other less painful options include applying silicone scar gels but these are far less effective that the intra-lesional injections. Excising the keloid also has a high risk of recurrence and is generally not recommended.