If there was so much scarring in the first place, what is the doctor's plan to prevent it from reoccurring? Any idea what caused all the scarring to begin with?

I have vascular problems due to scar tissue from broken collarbone and surgery to fix it. But I haven't found a doctor who has an answer for the return of the scar tissue (I am a confirmed keloid former.) So I am just rearranging and restricting life to things that don't trigger the problems.

Dr. D is not an option for me, but if there's a way to prevent or reduce scar formation that I could look into, it might help me find someone who could help me.