In a story I'm writing, one of the characters has accelerated healing abilities, and doesn't scar since any injuries he gets heal pretty much right after. Without going into too much detail and making this unnecessarily long, he basically loses these abilities for a while, and ends up with a scar from that time before he gets them back. So, what I'm wondering is this: if this character were to get injured in that same spot, and it healed right after since he has his accelerated healing abilities back, would the scar tissue still be there? I know this could probably just be up to me, since I'm the one making the rules for this accelerated healing ability, but from a medical standpoint: would the old scar tissue remain if someone were to get injured where they have a scar, but heal well enough so that the new injury doesn't scar? Or is there really no real-life case where that would happen?