anxiety
"THE best drug for trichotillomania to me. 

It can't be said more about the pain, torture, anxiety, shame, and ... that come with constantly pulling your hair out from your scalp. I used to also constantly pull/scratch the skin out from my outer ear! Before I stopped picking, I have developed 6 "devastated battlefields" on my head and both outer ears where nothing but constant bleeding is noticed. I started lamotrigine for quite a while. It first did little to my trich. In the meantime, I was also on several different SSRI and one SNRI. HOWEVER, after I upped my dose to 125 mg (qd), the scratching IMMEDIATELY went away the day right after I upped my dosage!!! My anxiety  is now lower for the first time in years!"