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not to be confused with hypothyroidism; causes a high metabolic rate which results in unexplained weight loss or inability to gain weight, inability to focus, and a number of other symptoms.
The most common cause of hyperthyroidism is Grave's, a genetically inherited disease.
by urbandr December 07, 2008
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a condition of the thyroid when it swells and does not act properly, typically you will act very skitsophrenic and yell for random reasons, also your eyes might turn red and swell until they pop out of your head and dangle by threads
I once knew this girl who had hyperthyroidism.
by kaleidescope October 29, 2007
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