Hyperthyroidism (cont.)
IN THIS ARTICLE
- Hyperthyroidism Overview
- Hyperthyroidism Causes
- Hyperthyroidism Symptoms
- Exams and Tests
- Hyperthyroidism Treatment
- Therapies to Decrease Thyroid Hormone Levels
- Antithyroid Medications
- Radioactive Iodine
- Surgical Interventions
- Therapies to Decrease Symptoms
- Hyperthyroidism as a Result of Other Medical Treatments
- Prognosis
- For More Information
- Synonyms and Keywords
- Authors and Editors
- Viewer Comments: Hyperthyroidism - Symptoms Experienced
Hyperthyroidism Causes
Common causes of hyperthyroidism in adults include:
- Diffuse Toxic Goiter (Grave's Disease)
- Overactivity of the entire thyroid gland caused by antibodies in the blood which stimulate the thyroid to grow and secrete excessive amounts of thyroid hormone
- Toxic Adenoma ("hot nodule")
- A dominant thyroid nodule, or lump, is overactive and secretes excess thyroid hormone
- Toxic Multinodular Goiter (Plummer's Disease)
- One or more nodules or lumps in the thyroid becomes overactive
- Subacute Thyroiditis
- Hyperthyroid phase of subacute thyroiditis, caused by
viral infection or post-partum inflammatory process
- Due to thyroid inflammation, excess hormone is
released into the blood circulation
- Hyperthyroid phase of subacute thyroiditis, caused by
viral infection or post-partum inflammatory process
- Drug-Induced Hyperthyroidism
- Iodine-induced hyperthyroidism: older population,
typically in setting of preexisting nontoxic nodular goiter
- amiodarone
(Cordarone)
- Iodine-containing contrast material used in radiology
studies
- Iodine-induced hyperthyroidism: older population,
typically in setting of preexisting nontoxic nodular goiter
Next: Hyperthyroidism Symptoms »
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Hyperthyroidism - Symptoms Experienced
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Hyperthyroidism »
Thyrotoxicosis is the hypermetabolic condition associated with elevated levels of free thyroxine (FT4), free triiodothyronine (FT3), or both.

