I am loosing alot of hair to the point where it has started to become very thin. I am taking azathioprine and remicade for my crohns. I have taken azathioprine in the past (quit taking it for a few years and recently started it again) and I don't remember loosing my hair like this. I was on TPN for 6 weeks last fall because of constant vomiting and pain due to an extremely bad flare up. I lost about 15 pounds but the past few months I have been feeling alot better and have been able to eat again and have started to put weight on. I am wondering if there is a vitamin deficiency that could cause this to happen. I am starting to get worried that pretty soon I will barely have any hair left. I know this sounds vain compared to all the other bad things that could happen to me but you know how us women feel about our hair. Does anyone have any ideas what could be causing my hair loss and if there is anything I can do about it?