Toggle: English / Spanish
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.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2013 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
This page was last updated: May 4, 2015