First of all, I was hyperthyroid once. This is very easy to treat/manage.

About needles: as part of being diagnosed for the aforementioned problem, I got stuck a lot. There are two things that you can do. One is ask them to use what is called a butterfly needle. This is a very fine gauge needle and the smaller the needle the less it stings. The other tip is DON'T Look at it.

Good luck and I hope everything comes out all right.

If you have any questions about hyperthyroid, you can PM me. I've researched it to death.