I have been trying to find an answer as to why my tongue has furrows (or creases) in it. They have been there for the past 2 years and an increase in levo and the addition of T3, Vit D and B12 have made no difference, although I feel better in myself, but not right.
I found a website which indicated that this could be a Vitamin A deficiency as thyroid hormones are required to process it and Vitamin A is often found in people with Hashi's.
Does anyone know, or have experience of the same thing?