Hyperthyroidism Symptoms

Signs and symptoms caused by excessive amounts of thyroid hormones

Written by Kresimira (Mira) Milas MD
Reviewed by Daesman N. Suri MD

When you have hyperthyroidism, your body is producing excessive amounts of the thyroid hormones T3 and T4. Since these hormones regulate your metabolism (how your body processes and uses energy), having too high a level will cause symptoms related to a high metabolism. In essence, hyperthyroidism speeds up some of your body's processes.

However, not everyone with hyperthyroidism will experience all of the symptoms listed below. These are all the possible symptoms, but symptoms vary based on how long your thyroid gland has been producing too much T3 and T4, how much extra T3 and T4 you have, and your age.

Here's what you may experience with hyperthyroidism:

If Graves' disease is the underlying cause of your hyperthyroidism, there are some additional symptoms associated with that. Please read our article on Graves' disease symptoms to learn more about those.


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Diagnosing Hyperthyroidism: Overactivity of the Thyroid Gland