There have got to be links between all this...
In January 2011, my wife came down with the flu for a week, and I got a severe cough at the same time. No other flu symptoms, just a bad cough. She recovered from the flu with some medicine, and I didn't seek medicine for my cough at the time.
A few weeks later, I started getting hives. I hadn't had hives since I was a kid, more than twenty years ago (at which time it was thought to be a penicillin allergy). After having hives for 6-8 weeks, I saw my GP, who advised me to go see an allergist.
My allergist ordered blood tests, which showed absolutely no allergies in any way (including penicillin) except for a diagnosis of autoimmune urticaria. I happened to notice that my thyroid levels were a little out of whack too, but dismissed it at the time. I went to see my GP a few weeks later because my cough was still not going away. He sent me to get a chest x-ray (which was negative) and told me not to worry about the thyroid levels.
I decided to see an endocrinologist anyway, who looked at my blood test results and diagnosed me with Hashimoto's. She also put me on 25 mcg of generic Synthroid.
Since then, my hives have been better, but now it seems that, instead of getting huge welts all over my body, I get these little patches of tiny hives which look almost like small mosquito bites, clustered into small groups. I just get one group at a time and they're very itchy (more so than the big welts, it seems), then they go away after ten or twenty minutes. These seem to appear at random times anywhere on my body, but especially my legs.
What's really strange is that I still haven't gotten rid of that cough entirely, but I've noticed in the last couple of months that my cough only seems to appear when I've broken out in hives. I can't quite tell if the cough comes first or if the hives do... most of the time it seems like the hives appear first, but I can't be sure. I thought this was really odd. I'm seeing my endocrinologist for a checkup next week. Any thoughts?