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Can Hashi HyperT Episode Mimic Subacute Thyroiditis?

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Old 02-10-2010, 12:06 PM   #1
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Can Hashi HyperT Episode Mimic Subacute Thyroiditis?

Just curious if any of you know the answer to this question: Is it possible to mistake a hyper swing from Hashimoto's for a bout of subacute thyroiditis? I had subacute thyroiditis (according to my endo) for about eight months last year (hyper phase lasted about 1 to 2 months). Test results (TSH of .004, very low throid uptake scan results, etc.) were indicative of subacute, but I didn't have any sort of respiratory virus preceding the episode (nor was I pregnant, the two things that are believed to bring on subacute thyroiditis).

Since I have abnormally high levels of anti-thyroglobulin antibodies, which I now understand, from learning so much on this board (thanks, everyone!! , means that I definitely have Hashi's, is it possible that what the doc THOUGHT was subacute was REALLY a Hashi's hyper phase? Is there any way to tell definitively?

Thanks in advance for all your thoughts!!


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Old 02-10-2010, 01:35 PM   #2
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Re: Can Hashi HyperT Episode Mimic Subacute Thyroiditis?

It seems to me sometimes the sub acute thyroiditis preceeds the Hashi's. I had a hyper phase a few years ago and doc thought the same thing. The only difference was the hyper phase lasted longer, I was still hyper 5 months later so doc said it's probably Graves after doing the TSI testing (antibody for Graves) and put me on anti thyroid meds. I have antibodies for Graves and Hashi's though,I guess whatever is in control at the time. If you have Hashi antibodies it's probably that now,if you continue having low levels of free T 3 and 4 for more than a few months.

Last edited by Bran'sNana; 02-10-2010 at 01:36 PM.

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