I had MOHS 4 weeks ago with flap repair. Stitches ran around the ala, under nose near the center, down to lip, along the lip line and out 1 inch. At 2 weeks there was a huge area of thick hard subQ scar tissue from mid lip out into the cheek. I was given steroid injections and instructed to do massage, which I've done. I recently had steroid injections again but I can't budge this scar tissue. It greatly reduces the use of my mouth on that side. Why did this happen? What more can I do?