I had it in my early teens and was successfully treated with radioactive iodine. I remember being tired, but jittery, my eyes didn't bulge out, but they looked big. I was really thin and ate like a teenage boy and my thyroid was inflamed, leaving a slight visable lump in my neck. I can't recall any bad side effects from the iodine, but to this day small metal pieces (like black sand at the beach) stick to my body as if I were a magnet.
I started having to supplement with Levothroid about 10 years ago, about 15 years after being treated.