My therapist thinks I should talk to my doctor about pinning borderline on top of my bipolar diagnosis. I know I show most of the symptoms and have since childhood.

What I want to discuss is self harm. I have been self harming practically my whole life. As a young kid (I'm 20) it was hitting my head off walls, bruising myself, etc. As a teen it morphed in to cutting. My therapist gives me DBT therapy and treats me as if I'm diagnosed borderline.  I've been doing better with emotional stability. Occasionally things set me off, I get randomly suicidal, and all that good stuff. What I can't shake is self harm. I don't even need a reason anymore. I don't need to be upset or angry to do it. I just get this wiggly, uncomfortable itch to cut myself. I don't always want the pain either. At times I've even found the pain to be a nuisance. Does anyone on here ever do that with the self harm? I feel confused sometimes as to why I'm even cutting, but once I start I want to do it more.