I get hives on my arms, the backs of my legs and my fingers. What I have is called dermatitis and I have seen a few other people on here with the same problem. There is a link between Celiac's disease and dermatitis, but as far as I know there has not been a link made between Crohn's and dermatitis, but I think its very possible. There are a ton of creams, ointment and foams that you can be prescribed to treat it if thats what it is. I personally just deal with it at the moment, but when I was using the prescribed stuff it did wonders and my skin cleared up pretty quickly.
We have all been sick of dealing with doctors, hospitals, tests and what not. But unfortunately, its not something any of us can really avoid. By not seeking medical care when needed, you can get a lot sicker and then its harder to come back from. The way I see it, do it now are do it 10x more down the road. But thats just my personal approach.
Hope you get your flare under control soon and start to feel better. :hug: