Diseases, Conditions, Syndromes

Hyperthyroidism vs. hypothyroidism—what's the difference?

In our daily life, we may sometimes feel run down, stressed or have unexpected weight fluctuations and think it is nothing out of the ordinary. Yet for some people, these symptoms could be a sign of an underactive or overactive ...

Diseases, Conditions, Syndromes

Subclinical hypothyroidism may not up VTE recurrence risk

(HealthDay)—In the elderly, subclinical hypothyroidism is not associated with significantly increased risk of recurrent venous thromboembolism (rVTE), according to research published online Jan. 27 in the Journal of Thrombosis ...

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Hyperthyroidism is the term for overactive tissue within the thyroid gland causing an overproduction of thyroid hormones (thyroxine or "T4" and/or triiodothyronine or "T3"). Hyperthyroidism is thus a cause of thyrotoxicosis, the clinical condition of increased thyroid hormones in the blood. Hyperthyroidism and thyrotoxicosis are not synonymous. For instance, thyrotoxicosis could instead be caused by ingestion of exogenous thyroid hormone or inflammation of the thyroid gland, causing it to release its stores of thyroid hormones. Its opposite is hypothyroidism which is an underproduction of the hormone.

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