Hey, I know this is a little cliche, but if they can’t handle a simple thyroid problem, they probably will let you down in the future when other worse thing might come up. I would also recommend refering to it as a thyroid condition, not a “disease.” I know this sounds weird, but the word disease can really make someone feel like your contagious or something. I’ve told friends before who gave that “wooh, get away” joke, but I know that people really feel that way sometimes.
I usually plug it like, since I have Graves’, I’ll be president someday! (George Bush)
Good Luck, Don’t worry, you’ll find someone to accept you for you with all the good and the bad.
Ron