Symptoms & Signs
The symptoms of factitious hyperthyroidism are the same as those of hyperthyroidism caused by the thyroid gland, with these exceptions:
- There is no goiter. The thyroid gland is usually small.
- The eyes do not bulge, as they do in Graves disease (the most common type of hyperthyroidism).
- The skin over the shins does not thicken, as it occasionally does with people who have Graves disease.
Diagnosis & Tests
The following test results may indicate factitious hyperthyroidism:
- High levels of free T4
- High levels of total T3
- High levels of total T4
- Low radioactive iodine uptake
- Low levels of thyroglobulin
- Low levels of TSH
Review Date : 6/17/2008
Reviewed 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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