I have hashi's disease, low thyroid posted on here before. Dr first put me on Synthroid 2 months ago, and then added cytomel 3 weeks ago. I FEEL GREAT!!!!!!! but........ sore, sensitive and itchy nipples on both breasts slightly pinker on the outside not much. I have looked all over the web, cannot find anything but Pagets. Called pharmacy, they said not usual side effect to medicine. Does anyone else have this?? I am worried and I do not want to go off the cytomel, it has helped me tremendously. Can the thyroid meds be stimulating my other hormones like estrogen or progesterone?