I pick too, pretty much anywhere where I have a blemish or wound or whatever, but mainly my face & upper arms. I also bite my nails until bleeding then start on the cuticles too. I'm essentially ALWAYS fidgeting or shaking my leg or moving in someway whilst sitting, when it gets bad I can't find a comfortable spot & pace & pace. I get up & sit down the get up & sit down & repeat. I also bite at my lips, peel off any dead skin, pull at my hair. Not sure if it's all anxiety or partly hypomanic agitation. I would bring it up with your Pdoc, something I also need to do lol