Hypothyroidism to sudden hyperthyroidism?

[jmidlife]

Hi,

I am a 63 year old, postmenopausal woman who has been hypothyroid for many years and had been stabilized on 125 mcg. of Synthroid.  My TSH has consistently been within 1-2 and I have felt well.  Suddenly, over six weeks ago, I became hyperthyroid with debilitating symptoms i.e. insomnia, agitated fatigue, inability to concentrate, and heart palpitations, fine hand tremor, etc.  and a TSH of .61..  I have been having a terrible time regulating my thyroid medication;(have lowered my dose three times and am now taking .88 mcg) but am gradually feeling better.  What could account for such a sudden shift from hypothyroidism to hyperthyroidism?  I have been worried that there might be an underlying, undiagnosed condition..

Thank you very much.

[Smilerdeb]

shouldve read 2.3 to 6.0 ...NOT 60 lol

[Smilerdeb]

Body changes, viral infections, stress...you name it, anything can cause the tsh to go haywire.
Mine went from 2.3 to 60 in 2 weeks because of massive stress at work.
Amazing how the body reacts to stress.