After working on the fence at the house, it had turned quite cold, and when I came inside my legs were covered with itchy hives. I used to break out in hives a LOT, almost always during/after a shower. Sometimes I would be in the shower and I could feel myself breaking out, and by the time I got out of the shower my skin was red and welted and itching horribly and I had to use topical antihistamine because it was SO BAD. It has also happened before when I'm out in the cold a lot - like if I'm at the local agility trial where it's like 40 degrees and I'm outside all day, my legs get really welted and itchy.
Well, the post-shower stuff has gone away since I quit eating wheat and cut out grains, which I assumed was just yet another way my body was like "hey this grain stuff just wasn't doing that much for you!" but didn't really think about it.
But since it happened earlier (and I had to frantically slather the topical antihistamine all over my legs) I thought to look up "breaking out in hives in the cold," and some googling has turned up a name for ALL of this. It's called Cold Urticaria. And the most interesting thing is that cold urticaria has been linked to gluten intolerance and many people find their symptoms improve when they go gluten free.
Y'know, the celiac panel they ran may have turned up a negative, but false negatives do happen with those. And at a certain point, despite what the panel said, I think 1 + 1 has to equal 2. Not that I was exactly ever planning on going back to eating wheat, but that settles it. No more wheat for me.
On the upside, Auggie's breeder has celiac disease and I made them a gluten free cake for their anniversary and it was DELICIOUS, so I guess it's not all bad.