What medication should I take (anxiety, meltdowns, hair pulling OCD)?

I have aspergers and social anxiety. I have been on Citalopram for a couple of years I take 1 and a half pills a day and i dont want to come off that but i have been pulling my hair out for over a year and its something I cant control (trichotillomania) And i just want to be more relaxed so what medication can I take as well as Citalopram. I have read about a few that help with the hair pulling and can be taken with Citalopram but im not sure which ones would be good for me.