I have gone through your question.
I can understand your concern.
Your last thyroid test results show subclinical hypothyroidism
.(slightly high TSH
and normal T3 and T4.)
In these cases it is recommended to increse the Thyroxine
dosis and in this way the TSH will be normalised soon.
Headache and giddiness or dizziness
and extreme fatigue
are rare side effects of thyroxine.
There are a lot of reported patients that start to experience these symptoms when the thyroxine dosis is increased.But generally these symptoms ease and than disappear within several days /weeks after starting the treatement.
If these symptoms persist for more that 2-3 weeks,my suggestion for you is to meet your treating doctor and discuss with him the potential causes and solution for this problem.This is the right think to do,in your circumstances.
Hope this is helpful.
Thanks for using HCM.