I'd have to say that it's the combination of prednisone and entocort being the main cause of the hairloss. Prednisone can mess with your hair alittle, so I bet the entocort was just the icing on the cake, as both meds are steroids.
What to Do??
As mentioned by Nanners, taking folic acid 1-2mg per day would be a great idea, along with a multivitamin. I do this, and I'm a mid-20's male, so balding is probably a normal thing, but I've noticed that my balding has at least slowed down some. Effects may take up to 3 months to notice...
PS. don't forget to look into some sort of calcium supplement as well if not already taking some...due to the steroid use...
Good luck! And don't feel bad, as unfortunately the steroids are one of the main things that work for me, more so than biologics etc...