I had a lip lift in late October. The scar was healing, then I got an itchy red bumps on the scar. They will not go away.

I went back to the surgeon and he prescribed anitbiotics and antiviaral meds, which did not help at all. Then I start using cordisone cream, benadrl cream, and now tea rose. I have made an apt with a dermatologist. Help. What could this be?