Hypertrophic and keloid scars can be tender and can decrease a person’s self-esteem. Intra-lesional of steroids and sometimes the anti-cancer drug, 5 FU are sometimes helpful. However, I have seen good results by injecting with a simple local anesthetic, which opens the cell membranes and promotes healing. Lasers can be helpful. I prefer the more gentle effects of cold lasers to the hot lasers, which burn the scar and can result in new keloid formation as the lesion heals.
See familypracticenews.com, August, 2012, p. 43.