Thyroid storm is a life-threatening condition that develops in cases of untreated thyrotoxicosis (hyperthyroidism).

Causes

Thyroid storm results from untreated hyperthyroidism. It is usually brought on by a stress such as trauma or infection.

Symptoms

Symptoms are severe and may include:

• Agitation
• Change in alertness (consciousness)
• Confusion
• Diarrhea
• Fever
• Pounding heart (tachycardia)
• Restlessness
• Shaking
• Sweating

Exams and Tests

• The top number in a blood pressure reading may be high
• Increased heart rate

Blood tests are done to evaluate thyroid function.

Possible Complications

Congestive heart failure and pulmonary edema 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.

Alternative Names

Thyrotoxic storm; Hyperthyroid storm; Accelerated hyperthyroidism