Hello,
My dad has thyroid cancer, and his treatment has involved a thyroidectomy and, more recently, radioactive iodine (RAI) treatment. Everything's been going well and he's been recovering at home. He hasn't been nauseous, although his taste has gone.
But recently, his tongue has turned purple, which has been concerning us. I tried researching it; and some people who had RAI mentioned getting small black spots which may have turned purple, but his is a lot larger than just a spot. I also found that a purple tongue may be due to viruses, fungi, etc. taking advantage of the temporarily weakened immune system, but also may be a sign of oral cancers.
I wanted to ask, what do you think may be the cause of his purple tongue, does it seem like a cause for concern, and should we mention it to the doctor?
Many thanks!
