I know how you feel. I am overwhelmed by life's difficulties right now. I scratch my skin too - I have a 3 inch diameter would on my leg that has been there for years. Because I have so many more significant life issues to deal with, I've let it go, and my GP has given up on me. But I'm going to give geatting it healed a real shot. I also attack my quicks and have permanently deformed them. One of my psychologists told me the other day that it is Self Harm, and was rather shocked as I guess I thought cutting was self harm. But I realised it's true.