Kirsten, I'm so sorry you're going through this! :(
I can relate to an extent. I'm near Houston, Texas where the heat index is 110' some days. And let's not forget the *lovely* humidity. I too have thyroid issues and until just this week, I had no a.c. in my office. :eek: I know the thyroid problems cause muscle weakness in the lower extremeties and man, some days i really just about fainted!! Finally, my boss allowed me to get a small a.c. unit, for about $90. American. Until then, I would water down my face and head and sit in the fan, for relief. Do you at least have a fan in your office? Have you heard of the cold suits? It's a cooling device you wear under your clothes. I remember hearing about it and did several searches but came up empty. Perhaps someone here has heard of it. Otherwise, I hope you can get an a.c. somehow!
The dizziness you're experiencing has me concerned. Maybe you could write to the press and they could do a story on this issue. **HUGS**