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Your thyroid is a butterfly-shaped gland in your neck, just above your collarbone. It is one of your endocrine glands, which make hormones. Thyroid hormones control the rate of many activities in your body. These include how fast you burn calories and how fast your heart beats. All of these activities are your body's metabolism. If your thyroid is too active, it makes more thyroid hormones than your body needs. This is called hyperthyroidism.

Hyperthyroidism is more common in women, people with other thyroid problems, and those over 60 years old. Grave's disease, an autoimmune disorder, is the most common cause. Other causes include thyroid nodules, thyroiditis, consuming too much iodine, and taking too much synthetic thyroid hormone.

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Illustration of the thyroid showing the parathyroid glands
Results 1 - 10 of 221 for hyperthyroidism
  1. Hyperthyroidism (National Library of Medicine)  
    ... hormones than your body needs. This is called hyperthyroidism. Hyperthyroidism is more common in women, people with other ... cause the neck to look swollen To diagnose hyperthyroidism, your doctor will look at your symptoms, blood ...
  2. ... for Hyperthyroidism Share: Fact Sheet Radioactive Iodine for Hyperthyroidism April, 2012 Download PDFs English Zulu Espanol Editors ... V. Hennessey, MD Leonard Wartofsky, MD What is hyperthyroidism? The thyroid gland, located at the front of ...
  3. Hyperthyroidism From the National Institutes of Health (National Institute of Diabetes and Digestive and Kidney Diseases) - PDF  
    ... Human Services NATIONAL INSTITUTES OF HEALTH What is hyperthyroidism? Hyperthyroidism is a disorder that occurs when the ... is made by the pituitary gland. What causes hyperthyroidism? Hyperthyroidism has several causes, including • Graves’ disease • thyroid ...
  4. Factitious hyperthyroidism is higher-than-normal thyroid hormone levels in the blood that occur from taking too much thyroid ... T4) and triiodothyronine (T3). In most cases of hyperthyroidism , the thyroid gland itself produces too much of ...
  5. Hyperthyroidism (American Academy of Family Physicians)  
    MENU Return to Web version Hyperthyroidism Overview What is hyperthyroidism? Hyperthyroidism, or overactive thyroid disease, means your thyroid gland makes and releases too much thyroid hormone. The ...
  6. Hyperthyroidism is a condition in which the thyroid gland makes too much thyroid hormone. The condition is ... called metabolism . Many diseases and conditions can cause hyperthyroidism, including: Eating too much of foods that contain ...
  7. ClinicalTrials.gov: Hyperthyroidism From the National Institutes of Health (National Institutes of Health)  
  8. Radioactive Iodine (I-131) Therapy for Hyperthyroidism (American College of Radiology) (Radiological Society of North America)  
    ... treatment for an overactive thyroid, a condition called hyperthyroidism . Hyperthyroidism can be caused by Graves' disease, in which ... top of page • How it's performed Treatment for hyperthyroidism is almost always done on an outpatient basis ...
  9. Hyperthyroidism (Overactive Thyroid) (Mayo Foundation for Medical Education and Research)  
  10. Thyrotoxic storm; Hyperthyroid storm; Accelerated hyperthyroidism ... Thyroid storm occurs in people with untreated hyperthyroidism. It is usually brought on by a major stress such as trauma, heart attack, or infection. Thyroid storm is very rare.
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