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Painless (silent) thyroiditis |
| Definition: |
| Painless (silent) thyoiditis is an inflammation of the thyroid gland characterized by transient hyperthyroidism, followed by hypothyroidism and then recovery.
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| Alternative Names: |
| Lymphocytic thyroiditis; Subacute lymphocytic thyroiditis |
| Causes, incidence, and risk factors: |
The cause of this type of thyroiditis is unknown. The thyroid gland becomes infiltrated with lymphocytes (a type of white blood cell). The disease affects women more often than men and usually develops in people between age 13 and 80. The symptoms are those of hyperthyroidism (overactivity of the thyroid gland) and may last for 3 months or less. |
| Symptoms: |
Symptoms in painless thyroiditis are usually mild. Most symptoms are due to hyperthyroidism and may include:
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| Signs and tests: |
A physical examination reveals an enlarged thyroid gland. The pulse (heart rate) may be rapid and the hands may shake.
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| Treatment: |
| Treatment is based on symptoms. Beta-blockers (Propranolol and others) relieve rapid heart rate and excessive sweating. Generally, painless thyroiditis will resolve on its own in time.
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| Expectations (prognosis): |
| The disease is usually resolved within 1 year, with the acute phase ending in 3 months. Some people may develop hypothyroidism over time, so regular follow-up is recommended. |
| Complications: |
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| Calling your health care provider: |
| Call your health care provider if symptoms of this disorder develop. If you have had this disease, regular follow-up is recommended to watch for the development of hypothyroidism. |
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