I was diagnosed with ulcerative colitis back in november and I was perscribed Humira for it in January since it's an IBD. I've also had psoriasis since last July on my scalp and the back of my neck. I am not taking Humira for my psoriasis but I figured since I'm using it for my UC I could kill two birds with one stone. But I've been using Humira for 6 months now and I have not since had ANY improvement whatsoever with my psoriasis, which makes me worried that it's not working for my UC either. How long before you know Humira isn't working at all?