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Thyroid storm is a life-threatening condition that develops in cases of untreated thyrotoxicosis (hyperthyroidism, or overactive thyroid).
Thyrotoxic storm; Hyperthyroid storm; Accelerated hyperthyroidism
Thyroid storm occurs in people with untreated hyperthyroidism. It is usually brought on by a major stress such as trauma, heart attack, or infection. Thyroid storm is very rare.
Symptoms are severe and may include any of the following:
Exams and Tests
- The systolic (top number) blood pressure reading may be high, and the diastolic (bottom number) blood pressure may be low
- Heart rate is increased
Blood tests are done to check thyroid hormones
Irregular heart rhythms (arrhythmias) may occur.
and can develop rapidly and lead to death.
When to Contact a Medical Professional
This is an emergency condition. Call 911 or another emergency number if you have hyperthyroidism and experience symptoms of thyroid storm.
- Last reviewed on 5/10/2014
- Brent Wisse, MD, Associate Professor of Medicine, Division of Metabolism, Endocrinology & Nutrition, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
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