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Unexpected rise in TSH
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wallis52 posted:
I have a hx of clinical depression, usually easily managed with two anti-depressants, Lexapro being one of them. In July, my mood plummeted and I had myself voluntarily admitted to the psych ward. I responded well to a change in medication, (effexor and trazadone at night) I am 60, but slender and fit, and have never been hospitalized for depression before, or much of anything else, for that matter, other than having 4 NVD. One of the four children does suffer from depression.

My TSH was found to be 22, with the T3 T4 being roughly in the normal range. Probably the T3 was low. I have had my TSH closely followed over the last 4 years, with a steady decrease in Synthroid. I began at 176 mcg and was down to 88 mcg. In February, my TSH was 2.24. I did notice things that I now recognize as hypomanic, such as insmonia, mild euphoria, et al. Now that my TSH is normalizing, I feel much better, but have the occasional mood swing that I have never experienced before, to my recollection.

I am puzzled as to why my TSH went up so high in less than 6 months. The endocrinologist flippantly assured me that I had forgotten to take my synthroid. I am a registered nurse, and not entirely stupid about that sort of thing. I always take my synthroid with my anti-depressant in the morning. Besides that, I was running out of my thyroid, so it stands to reason that I did take it, after all.

My psychiatrist is an excellent man and seriously overeducated, possessing a Phd in pharmacology and another in clinical biochemistry. He had an explanation for the TSH that made perfect sense to him, and almost none to me. Part of that is due to the fact that he is from Spain, and I don't think his thoughts always translate well into English.

Any ideas about the rise in the TSH? Somehow, I don't feel quite right, although I realize that I haven't been on the increased thyroid long enough to get the full effect.

Any sensible explanation would be appreciated.
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An_247250 responded:
This is kind of ironic, I have been on synthyroid for about 4 months now, my doc just prescribed lexapro a week ago... After taking a blood test my TSH T4 (i believe) went up to 2.2, this was never seen before, He then lowered my synthyroid medication. There must be a connection, because my TSH was always low before that.
 
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Thomas L Schwartz, MD responded:
Hello and sorry, I am not an endocrinology.. I think thyroid does fluctuate in general. The thyroid can get ill ie a virus and immune attact etc. Sometimes an immune attack can leave the thryoid permanently hurt with increased TSH, sometimes the thyroid is temporarily hurt and recovers ie. TSH goes up then down. So your thyroid issue may have just been a random event that has healed some....that is my best idea


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