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The texture of the thyroid as seen in the ultrasound
is not normal.
You might be suffering some autoimmune damage of the thyroid gland which is making you feel sick.
It is good that you are going to see a thyroid specialist
, get advised work up which would be helpful in further management.
Probably as the first thing, you would need to escalate the dose of the thyroxine
I hope the advise would be helpful for you.