Hello Ad Intra: I don't know if this will be helpful. But here's a link to a video California therapist Kati Morton did titled: "What Are Self Harm Behaviors?":
I don't know what type of doctor it is you're referring to. But if s/he's a psychiatrist, my recommendation is to be honest. Your doctor can't be of as much benefit to you as possible if you're not forthcoming with regard to what's going on with you.