I had treatment with I-131 at Mayo Clinic in 1986 for Graves Disease. I have been on Synthroid or Levothyroxine ever since. Recently, my TSH went way down. Although my dosage has been reduced from .112 to to .100 and now .088, I am continuing to have hyper symptoms after 8 weeks on .088, I have the scalp "raised spots" and other symptoms including throat and swallowing "fullness" and some ear discomfort, all on the right side. No shakiness though, which I had with Graves. Also, my memory improved, the lower my TSH went (I had been diagnosed with MCI) - is there a connection?? I am 64 years old - could aging cause my need for replacement to drop that much and cause the other symptoms? Thanks in advance for input!
It may be worth having a second opinion from an endocrinologist who specializes in thyroid before committing to surgery. You have hyperthyroidism with increased uptake, this is usually either toxic nodular thyroid or Graves' disease. Prior to surgery this hyperthyroidism may need to be corrected to decrease risks associated with surgery and anesthesia. Also you need to to determine whether or not biopsy is indicated prior to surgery or whether or not I-131 would be an appropriate treatment for this situation.