Learn About Hyperthyroidism

What is the definition of Hyperthyroidism?

Hyperthyroidism is a condition in which the thyroid gland makes too much thyroid hormone. The condition is often called overactive thyroid.

What are the alternative names for Hyperthyroidism?

Thyrotoxicosis; Overactive thyroid; Graves disease - hyperthyroidism; Thyroiditis - hyperthyroidism; Toxic goiter - hyperthyroidism; Thyroid nodules - hyperthyroidism; Thyroid hormone - hyperthyroidism

What are the causes of Hyperthyroidism?

The thyroid gland is an important organ of the endocrine system. It is located at the front of the neck just above where your collarbones meet. The gland makes the hormones that control the way every cell in the body uses energy. This process is called metabolism.

Many diseases and conditions can cause hyperthyroidism, including:

  • Graves disease (most common cause of hyperthyroidism)
  • Inflammation (thyroiditis) of the thyroid due to viral infections, some medicines, or after pregnancy (common)
  • Taking too much thyroid hormone (common)
  • Noncancerous growths of the thyroid gland or pituitary gland (rare)
  • Some tumors of the testes or ovaries (rare)
  • Getting medical imaging tests with contrast dye that has iodine (rare, and only if there is already a problem with the thyroid)
  • Eating too much of foods that contain iodine (very rare, and only if there is already a problem with the thyroid)
What are the symptoms of Hyperthyroidism?

Common symptoms include:

  • Anxiety
  • Difficulty concentrating
  • Fatigue
  • Frequent bowel movements
  • Goiter (visibly enlarged thyroid gland) or thyroid nodules
  • Hair loss
  • Hand tremor
  • Heat intolerance
  • Increased appetite
  • Increased sweating
  • Irregular menstrual periods in women
  • Nail changes (thickness or flaking)
  • Nervousness
  • Pounding or racing heart beat (palpitations)
  • Restlessness
  • Sleep problems
  • Weight loss (or weight gain, in some cases)

Other symptoms that can occur with this condition:

  • Breast development in men
  • Clammy skin
  • Diarrhea
  • Feeling faint when you raise your hands
  • High blood pressure
  • Itchy or irritated eyes
  • Itchy skin
  • Nausea and vomiting
  • Protruding eyes (exophthalmos)
  • Skin blushing or flushing
  • Skin rash on the shins
  • Weakness of the hips and shoulders
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What are the current treatments for Hyperthyroidism?

Treatment depends on the cause and severity of symptoms. Hyperthyroidism is usually treated with one or more of the following:

  • Antithyroid medicines (propylthiouracil or methimazole) which reduce or block the effects of the extra thyroid hormone
  • Radioactive iodine to destroy the thyroid gland and stop the excess production of hormones
  • Surgery to remove the thyroid

If your thyroid is removed with surgery or destroyed with radioactive iodine, you must take thyroid hormone replacement pills for the rest of your life.

Medicines called beta-blockers may be prescribed to treat symptoms such as fast heart rate, tremor, sweating, and anxiety until the hyperthyroidism can be controlled.

Who are the top Hyperthyroidism Local Doctors?
Endocrinology
Endocrinology

Saint Lukes Physician Group Inc

12300 Metcalf Ave, 
Overland Park, KS 
 8.2 mi
Accepting New Patients
Offers Telehealth

Namita Gupta is an Endocrinologist in Overland Park, Kansas. Dr. Gupta and is rated as an Experienced provider by MediFind in the treatment of Hyperthyroidism. Her top areas of expertise are Type 2 Diabetes (T2D), Osteoporosis, Postmenopausal Osteoporosis, and Obesity in Children. Dr. Gupta is currently accepting new patients.

Endocrinology
Endocrinology

Kansas University Physicians Inc

12000 W 110th St, 
Overland Park, KS 
 7.8 mi
Accepting New Patients
Offers Telehealth

Chitra Choudhary is an Endocrinologist in Overland Park, Kansas. Dr. Choudhary has been practicing medicine for over 16 years and is rated as a Distinguished provider by MediFind in the treatment of Hyperthyroidism. Her top areas of expertise are Hyperthyroidism, Thyroid Storm, Peripheral Neuropathy, Hypoaldosteronism, and Thyroidectomy. Dr. Choudhary is currently accepting new patients.

 
 
 
 
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Endocrinology
Endocrinology

Saint Lukes Physician Group Inc

12300 Metcalf Ave, 
Overland Park, KS 
 8.2 mi
Accepting New Patients
Offers Telehealth

Marie Griffin is an Endocrinologist in Overland Park, Kansas. Dr. Griffin and is rated as an Advanced provider by MediFind in the treatment of Hyperthyroidism. Her top areas of expertise are Obesity in Children, Hypothyroidism, Type 2 Diabetes (T2D), and Hashimoto Thyroiditis. Dr. Griffin is currently accepting new patients.

What is the outlook (prognosis) for Hyperthyroidism?

Hyperthyroidism is treatable. Some causes, such as thyroiditis, may go away without treatment.

Hyperthyroidism caused by Graves disease usually gets worse over time. It has many complications, some of which are severe and affect quality of life.

What are the possible complications of Hyperthyroidism?

Thyroid crisis (also called thyroid storm) is a sudden worsening of hyperthyroidism symptoms that may occur with infection or stress. Fever, decreased alertness, and abdominal pain may occur. People need to be treated in the hospital.

Other complications of hyperthyroidism include:

  • Heart problems such as fast heart rate, abnormal heart rhythm, and heart failure
  • Osteoporosis
  • Eye disease (double vision, ulcers of the cornea, vision loss)

Surgery-related complications, including:

  • Scarring of the neck
  • Hoarseness due to nerve damage to the voice box
  • Low calcium level due to damage to the parathyroid glands (located near the thyroid gland)
  • Hypothyroidism (underactive thyroid)

Tobacco use may make some complications of hyperthyroidism worse.

When should I contact a medical professional for Hyperthyroidism?

Contact your provider if you have symptoms of hyperthyroidism. Go to an emergency room or call 911 or the local emergency number if you have:

  • Change in consciousness
  • Dizziness
  • Rapid, irregular heartbeat

Contact your provider if you are being treated for hyperthyroidism and you develop symptoms of underactive thyroid, including:

  • Depression
  • Mental and physical sluggishness
  • Weight gain
What are the latest Hyperthyroidism Clinical Trials?
Natural History of Thyroid Function Disorders

Summary: Participants in this study will be patients diagnosed with or suspected to have a thyroid function disorder. These conditions may include: hypothyroidism, hyperthyroidism, thyroid hormone resistance, Graves' Dermopathy, and thyroid-stimulating hormone (TSH) secreting pituitary adenomas. The main purpose of this study is to further understand the natural history, clinical presentation, and genetics...

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A Randomized, Double-Blind, Placebo-Controlled, Phase 2b Study to Assess the Efficacy, Safety, and Tolerability of IMVT-1402 as Treatment for Adult Patients With Graves' Disease

Summary: This is a study to assess the efficacy, safety, and tolerability of IMVT-1402 in adult participants with Graves' disease (GD) who are hyperthyroid despite antithyroid drug (ATD) treatment. The primary objective of this study is to evaluate the efficacy of IMVT-1402 versus placebo as assessed by T3 (total triiodothyronine \[T3\] or free triiodothyronine \[FT3\]), free thyroxine (FT4), thyroid-stimu...

Who are the sources who wrote this article ?

Published Date: July 21, 2024
Published By: Sandeep K. Dhaliwal, MD, board-certified in Diabetes, Endocrinology, and Metabolism, Springfield, VA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

What are the references for this article ?

Hollenberg A, Wiersinga W, Bartalena L, Feldt-Rasmussen U. Hyperthyroid disorders. In: Melmed S, Auchus RJ, Goldfine AB, Rosen CJ, Kopp PA, eds. Williams Textbook of Endocrinology. 15th ed. Philadelphia, PA: Elsevier; 2025:chap 10.

Pearce EN, Hollenberg AN. Thyroid. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 207.

Ross DS, Burch HB, Cooper DS, et al. 2016 American Thyroid Association guidelines for diagnosis and management of hyperthyroidism and other causes of thyrotoxicosis. Thyroid. 2016;26(10):1343-1421. PMID: 27521067 pubmed.ncbi.nlm.nih.gov/27521067/.