Alright here are the possible side effects:
~fatigue, increased weight, hair loss or thinning, dry skin, itching, headache,increased sweating, increased blood pressure or heart rate, palpitations, muscle or joint pain,
tremors,anxiety ,depression, insomnia,.
Now you might not have any side effects because those are just possible.
Reasons to remove part or all of your thyroid include:
If the area that is not working is enlarged that normally would be removed.
You can read more about it here:
Hope this helps,