Posted 10/24/2021 2:21 PM (GMT -8)
Low TSH means hyperthyroidism, the cause most probably autoimmune disease called Graves disease or Hashimoto's disease, But to know that for sure you need to test for thyroid antibodies; TSI, TGab and antiTPOab.
I am not a doctor so I only share my experience, so I think that you need to make an appointment with an Endocrinologist, a doctor who specializes in Endocrinology.
Make sure to go with the ultrasound and biopsy results, based on these and the tsh, the endo will make a decision as to the steps of the treatment, since performing a thyroidictomy not always the first step, specially if not all of the gland is nodular or has tumors, many times the nodules if benign shrink by them selves only by restoring the tsh to normal values.
There are many treatments to hyper, there are the anti thyroid medications which will bring the TSH higher, but they have certain side effects, there is also the RAI(Radio active iodine) which will make you hypo to the rest of your life and thus will need to take Levothyroxine and the final option is a total or partial thyroidictomy depending on the type and location of nodules and tumors if there are such !
Best,