I was diagnosed with Graves Disease this January. My levels are finally normal but I find myself voice getting horse and having difficulty breathing on a daily basic. It usually starts in the afternoon. I was wondering is this a part of graves or something else causing this.

I would see your doctor asap and get a thorough examination.

I second the recommendation Kells made.

I assumed my throat/chest pain and difficult swallowing (a year after my Graves diagnosis and two months after RAI) was thyroid-related. It turned out I had developed severe GERD (acid reflux) and a constricted esophagus. Both my endocrinologist and gastroenterologist attributed my sudden GI issues to my fluctuating thyroid hormone levels. I have not heard a lot about it on here, but both physicians told me patients develop GI issues when their thyroids are not controlled for a long period of time. Fortunately, reflux is easy to treat with PPIs like Prilosec or Nexium. It might be worth seeing your endo as well as your primary care physician to rule out any GI issues.

We tend to attribute any new symptom to Graves, when sometimes it is completely unrelated, or related but not a direct thyroid issue.

I would see your doctor. I did have what I called “anxiety breathing” which felt like constricted breathing or others have called it “air hunger”. I was getting enough air, but it didn't feel like it, but it was anxiety related. My anxiety was caused by Graves.