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Silent thyroiditis

Contents of this page:

Illustrations

Thyroid gland
Thyroid gland

Alternative Names    Return to top

Lymphocytic thyroiditis; Subacute lymphocytic thyroiditis; Painless thyroiditis

Definition    Return to top

Silent thyroiditis is swelling (inflammation) of the thyroid gland, in which the person alternates between hyperthyroidism and hypothyroidism.

Causes    Return to top

The cause of this type of thyroiditis is unknown. The disease affects women more often than men. It usually develops in people ages 13 - 80.

Symptoms    Return to top

The earliest symptoms are those of overactive thyroid gland (hyperthyroidism). These symptoms may last for 3 months or fewer. Later symptoms may be of an underactive thyroid (including fatigue and cold intolerance) until the thyroid recovers.

Symptoms are usually mild and may include:

Exams and Tests    Return to top

A physical examination may show:

Tests may show:

Treatment    Return to top

Treatment is based on symptoms. Beta-blockers relieve rapid heart rate and excessive sweating.

Outlook (Prognosis)    Return to top

Generally, silent thyroiditis will go away on its own within 1 year. The acute phase will end within 3 months.

Some people may develop hypothyroidism over time. Regular follow-ups with a doctor are recommended.

Possible Complications    Return to top

Hypothyroidism may develop.

When to Contact a Medical Professional    Return to top

Call your health care provider if you have symptoms of this condition.

References    Return to top

AACE Thyroid Task Force. American Association of Clinical Endocrinologists Medical Guidelines for Clinical Practice for the Evaluation and Treatment of Hyperthyroidism and Hypothyroidism. Endocr Pract. 2002;8:459.

Ladenson P, Kim M. Thyroid. In: Goldman L and Ausiello D, eds. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa:Saunders;2007:chap 244.

Update Date: 6/17/2008

Updated by: Elizabeth H. Holt, MD, PhD, Assistant Professor of Medicine, Section of Endocrinology and Metabolism, Yale University. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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