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Hyperthyroidism
The thyroid gland produces a hormone that controls how your cells use energy (metabolize). Hyperthyroidism occurs when the body produces excessive amounts, causing rapid heart rates, weight loss, and heat intolerance.
Source: healthline.com

en.wikipedia.org/wiki/Hyperthyroidism

Hyperthyroidism is the condition that occurs due to excessive production of thyroid hormone by the thyroid gland. Thyrotoxicosis is the condition that occurs due ...

www.webmd.com/a-to-z-guides/overactive-thyroid-hyperthyroidism

Feb 23, 2017 ... If you have an immune disorder called hyperthyroidism, you may notice changes in your body. Learn how to identify the symptoms of ...

www.healthline.com/health/hyperthyroidism

Jun 29, 2016 ... The thyroid gland produces a hormone that controls how your cells use energy. Hyperthyroidism occurs when the body produces excessive ...

www.mayoclinic.org/diseases-conditions/hyperthyroidism/basics/causes/con-20020986

Oct 28, 2015 ... Hyperthyroidism — Comprehensive overview covers symptoms, causes, treatment of an overactive thyroid gland.

familydoctor.org/condition/hyperthyroidism

Hyperthyroidism, or overactive thyroid disease, can cause a variety of symptoms, including rapid heartbeat, anxiety or irritability. Find out more.

www.endocrineweb.com/conditions/hyperthyroidism/hyperthyroidism-overview-overactive-thyroid

Apr 7, 2017 ... Hyperthyroidism is a condition in which the thyroid gland is overactive and makes excessive amounts of thyroid hormone. Learn about the ...

www.medicinenet.com/hyperthyroidism/article.htm

Learn about hyperthyroidism (overactive thyroid gland) symptoms such as irritability, tachycardia, heat intolerance, increased sweating, and weight loss.

www.thyroid.org/hyperthyroidism

The term hyperthyroidism refers to any condition in which there is too much thyroid hormone present in the thyroid. In other words, the thyroid gland is overactive.

www.medicalnewstoday.com/articles/9153.php

May 24, 2017 ... Hyperthyroidism is a medical condition caused by an abnormally high level of thyroid hormone in the bloodstream. In mild cases it is ...