Hi, my mum has just had this done on her legs, basically she was told the same as yourself, the deratologist told her to put vaseline on it to soften it until her appointment, then scrapped the top of the scabs, was very painful, she then had some cream put onto the areas which was left on for 4 hours covered, when she went back, they put this red light onto the wounds, all wearing goggles, at first it was ok, but as it warmed up the pain got worse, so they gave her some local aneasthetic, this helped a lot and she wished she had it from beginning, she does have a strong pain threshold so it must have hurt, after about 30 mins, the treatment was finished, they covered the areas treated, that was 3 weeks ago, one area is healing really well, the other has almost sorted, she has to go back next month by which time it should all be clear hopefully, although thy did say they may need 2 treatments on the one area, I wont deny it could be painul, but not too bad with aneasthetic, if it works surely it is worth it!!
Hope this helps. Take care.