Serious question; after what happened in Season 1, there’s no way he’d not have serious PTSD. Debbie too for that matter!
This could have been a pretty engaging character point; instead it seems kind of weird how Mark is just “fine” while Debbie is breaking down alone and no one, not even Cecil, has recommended they get a therapist.
Because you don’t need a doctor for minor injuries or sicknesses. Which is what this is to Mark. Had they left Mark on that mountain and not given him medical treatment, he still would’ve healed due to his powers. The physical treatment was undeeded.
Which goes into the next point:
Mark is the minority of people. A mental injury suxh as this is minor for him and he can heal on his own.
Which again is the point of his character. He’s Invincible because of his will and mind, not because of his body. There is nothing you can do to him to permanently keep him down outside of straight up killing him.
Besides he’ll go through far worse in the future. Such as >! Being raped and missing years of his daughters life due to unwilling time travel !<