Thyroid storm is a life-threatening condition that develops in cases of untreated thyrotoxicosis (
Thyrotoxic storm; Hyperthyroid storm; Accelerated hyperthyroidism
Causes, incidence, and risk factors
Symptoms are severe and may include:
Change in alertness (consciousness)
Pounding heart (
Signs and tests
The top number in a blood pressure reading may be high
Heart rate is increased
Blood tests are done to evaluate thyroid function.
- TSH is usually too low to detect.
- Thyroid hormone levels such as free T4 and total T3 are high.
Calling your health care provider
This is an emergency condition. Call 911 or another emergency number if you have hyperthyroidism and experience symptoms of thyroid storm.