hand biting

this might sound really weird. i have ocd, substance abuse issues, as well as other self harm issues. when i’m really drunk, i find myself biting the skin on my hands and fingers. my guess is it’s a self soothing method but i’m wondering if anyone knows the psychology or reasoning behind it or if I am alone in this instance.

please don’t judge if you don’t understand, you can make comments and ask questions but please don’t be rude. there are so many things about myself i am still trying to understand, and it’s probably the same with you. no one wants to be put down for something they can’t control.