Thanks for the quick reply. I asked because I had a head cold last weekend and lots of pressure in my sinuses. I would even get what I can only describe as a "foggy" feeling every now and then. Though it might be a delayed Humira reaction. I called the Humira nurse who said to contact my doctor. I talked with my GI and he felt it was not a Humira reaction. However, he had me postpone my next dose (due yesterday) for a couple of days until the sinus issue subsides. Any thoughts?