OK so I did some online research it's called DERMATILLOMANIA. Anyways I always pick at my thumb & I've picked at it so bad that my skin color on my thumb is like a dark red (looks like a birth mark or a burn) & it's so embarrassing! I always have to hide my hand or wear gloves. Well I cut my nails or get fake nails & it doesn't work. I will break down & use fingernail clippers to pick the skin. Well I also pick my lip skin. I usually pick both until they bleed. I've been picking for about 4 years.