Hi, I don't think I would be diagnosed with Trichotillomania, but I do pull out my hair multiple times per day. Luckily I have very thick hair, and I do pull only one strand at a time. So with braiding my hair to try and stop myself, and having lots of hair to start with, it isn't noticeable, and I've only had very small bald patches a couple of times. I also pick the skin on my scalp and creates sores, but again, not really bad ones. At the moment though, I have some sores on my legs I haven't let heal up all year basically, hmmm.
Anyway, I'm sorry you are both having pain from your fingers, I hope they are able to heal and your techniques to try and stop work for you. Hugs and best wishes.