Hi Ambi.
Unfortunately most doctors do not understand the degree of importance of
thyroid hormones in the maintenance, repair, regeneration and healing
of the human body.
You will never fully recover from anything, UNLESS your thyroid function
(not just thyroid hormone levels) is well regulated!
Having said this, you need to do the following:
Get B12 Methylocobalamin shots, get FT3, FT4 and RT3 Thyroid tests
(all 3) and then seek a very knowledgeable holistic doctor in this to help you regulate your thyroid function with natural desiccated thyroid and you may also need Cytomel (only T3) as well if you have high levels of RT3.
Your geographic urticaria is likely due to excess histamine levels and
exasperated by low thyroid function and stress.
Methylfolate supplementation may help along with Methylocobalamin,
however you need to lower your stress levels with meditation ( Pranayama
breathing is great for meditation) and other means.
Best wishes,
Niko