I have euthyroid Graves' disease, which is some crazy stuff indeed. I was actually hypothyroid, but didn't have Hashimoto's antibodies, and when I developed thyroid eye disease (TED) it pretty much sealed the diagnosis. I was initially diagnosed when I was 25.
I came > < this close when I was 27 to opting for radiation treatment for my eyes, but my family has a history of brain cancer and the radiologist wasn't comfortable with me having it so young and neither was I. It's since stabilized, which is YAY!