Overactive thyroid (hyperthyroidism) occurs when your thyroid gland produces too much of the thyroid hormones thyroxine or triiodothyronine. Overproduction of thyroid hormones can be caused by a number of conditions, which are outlined below.
Disclaimer: The information provided here should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. The information is provided solely for educational purpose and should not be considered a substitute for medical advice.
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