I think have Dermatillomania,long word I know. I have all the symptoms, including the most

Common age and gender it affects. I try to stop but can’t and that’s s common symptom. It leaves marks and my hands are scarred. I can’t go to a doctor, my parents for 1:would think I’m faking or something i just know it. 2: I don’t want them to pay unnecessary bills. Any advice is welcome