I have found a solution for my scap picking (for me at least)

I rub glue.. regular safe glue that kids use in school..Just be sure it's skin friendly. all over my arm. and just pick that off when its dried. Preferable with a tweezer. i get exactly the same high from it. and It's pain free.... meanwhile my wounds can heal so that I can't even pick them any more when they are healed. Don't know if this works for you but for me it really does! I'm so happy