I have been diagnosed with Alopecia Areata a year and a half ago by my dermatologist. It first started as one small spot and now my hair is thinning out so bad and I have other spots as well. I also have rheumatoid arthritis and have been on Enbrel, Humira and now I am on Orencia. I take a multivitamin, hair supplements, biotin, vitamin C, Fish Oil, and Tumeric every day. Does Orencia cause hair thinning, or could this all be from the Alopecia?