TLC has some great information in their pamphlet: Expert Consensus, Treatment Guidelines for Trichotillomania, Skin Picking and Other Body-Focused Repetitive Behaviors.
I briefly skimmed over it today and one thing stuck out to me: (click to enlarge)
You know, I've read those statements before saying that people have trich because of some past trauma or abuse... and I was lost. That's not me... so why do I have trich? I was confused. I didn't feel like I had some past that I needed to work out (and then magically trich would disappear). Sheesh, was there something so awful in past that I blocked it out?! I didn't think. I knew there wasn't- I've had a good life, an easy care-free childhood. So why did I have trich!?! This information has to be wrong.
And it's so great to actually see it in print "these behaviors are not generally an indication of deeper issues or unresolved trauma." Sometimes it just "is what it is." Will we ever learn why we have trich? Maybe not. And that's okay. For whatever reason, this is the card that was dealt to me. There was nothing I did that caused it, nothing in my past, no deep dark issue... I just have trich. And I'm okay with that.