Hyperthyroidism or overactive
thyroid is a condition in which the thyroid gland produces too much thyroid
hormone.
There are five main causes of
hyperthyroidism:
-
Thyroiditis (swelling of the thyroid).
-
Autoimmune disorders.
-
Excessive iodine consumption.
-
Side-effect to
certain drugs.
-
Lumps located in the thyroid gland
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