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EndocrineWeb Community Advice

Unrecognized Overmedication???

From: Anderson2020 - 1 year 11 weeks ago

So I am a 31 year old female. I have been on levothyroxine 50 mcg for about 3 and a half years and my thyroid functioning has always come back within the normal limits. Just this past November I started having palpitations really bad and anxiety. With my history of GAD and depression, it was most likely the cause. The NP did TFTs just to be sure and my TSH and T4 came back okay. So fast forward a week or so, I had an instance of racing heart, dizziness, flushing, ect. Went to the ED and they told me is was a panic attack ( I have never experienced one to that extent in my life) They tested TSH and it was once again within normal limits. I have been struggling with sinus tachycardia since then. Everything cardiac is coming back okay. I have also been dropping weight like crazy. I've lost 50 pounds since June 2019. Most of it happening towards the beginning of November. I have been in and out of the hospital multiple times and TSH comes back normal, cardiac comes back normal. Last week I had a about of the sudden increase in heart rate and went back to the ED. Potassium was a 3.1( not too low, but definitely low) TSH once again came back normal. 2 days later I ended up back in the hospital and admitted just to monitor my cardiac function. They did a TSH cascade and it came back as a 0.2 and my free T4 came back as a 3.53. So my question is, can TSH change drastically that quick? Do TSH levels have to be low to have hyperthyroidism? Can you be symptomatic of hyperthyroidism induced by levothyroxine and still have TSH within normal limits? I have been so scared the past few months. I have kids to take care of, a husband, school, ect. I just feel like I'm not getting the answers I need from the physicians here and they don't think endocrinology will accept me because I have only had one abnormal lab value, although have been symptomatic.

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