Thyroid Storm in Seniors: A Family Caregiver’s Emergency Guide

Published: July 28, 2026 | Last Reviewed: July 28, 2026 | Medically Reviewed by: Dr. Sarah Mitchell, MD, Geriatrics | Reading Time: 5 min

Key Takeaways

What Are the Common Causes and Risk Factors?
What Are the Symptoms and Warning Signs?
What Are Exams and Tests?
How Is It Treated?

A thyroid storm is a rare life-threatening condition of the thyroid gland. It may develop in cases of untreated

hyperthyroidism

, or overactive thyroid (thyrotoxicosis).

Understanding thyroid storm seniors hyperthyroidism emergency management is important for seniors and their caregivers. the thyroid gland is located in the neck, just above where your collarbones meet in the middle.

What Are the Common Causes and Risk Factors?

A thyroid storm occurs in people with uncontrolled hyperthyroidism due to a major stress such as:

Trauma
Heart attack
Infection

Rarely, a thyroid storm can be caused by radioactive iodine therapy for

Graves disease

. This can occur even a week or more after treatment.

What Are the Symptoms and Warning Signs?

Symptoms are severe and may include any of the following:

Agitation
Change in alertness (consciousness)
Confusion
Diarrhea
Increased temperature
Pounding heart (

tachycardia

)
Restlessness
Shaking
Sweating
Bulging eyeballs

📖 What Are Exams and Tests?

What Are Exams and Tests?

Your health care provider may suspect a thyroid storm based on:

A high systolic (top number) blood pressure reading with a lower diastolic (bottom number) blood pressure reading (wide pulse pressure)
A very high heart rate
A history of hyperthyroidism
An exam of your neck that finds your thyroid gland is enlarged (

goiter

)

Blood tests are done to check the levels of the thyroid hormones

TSH

free T4

and

Other blood tests are done to check heart and kidney functions and to check for infection.

Liver function tests

provide added diagnosis and treatment information.

📖 How Is It Treated?

How Is It Treated?

A thyroid storm is a medical emergency. It is life threatening. Often, the person needs to be admitted to the intensive care unit. Treatment may include:

Oxygen therapy for

breathing problems
Fluids for dehydration
Cooling blankets to return the body temperature to normal
Monitoring any excess fluid in older people with heart or kidney disease
Medicines to manage agitation
Medicine to slow your heart rate
Vitamins and glucose

The goal of treatment is to decrease thyroid hormone levels in the blood. Sometimes, high doses of iodine are given to try and stun the thyroid. Other medicines known as thionamides may be given to lower the hormone level in the blood. Beta blocker medicines are often given by vein (IV) to slow the heart rate, lower blood pressure, and block the effects of the thyroid hormone excess. In some severe cases, glucocorticoids (steroids) are given.

Antibiotics are given in case of infection.

📖 What Are Possible Complications?

What Are Possible Complications?

Irregular heart rhythms (

arrhythmias

) may occur.

Heart failure

and fluid in the lungs (

pulmonary edema

) can develop rapidly and cause death.

📖 When to Contact a Medical Professional?

When to Contact a Medical Professional?

This is an emergency condition. Call 911 or the local emergency number if you have hyperthyroidism and experience symptoms of a thyroid storm.

📖 How Is It Prevented?

How Is It Prevented?

To prevent a thyroid storm, hyperthyroidism should be treated.

Thyrotoxic storm; Thyrotoxic crisis; Hyperthyroid storm; Accelerated hyperthyroidism; Thyroid crisis; Thyrotoxicosis – thyroid storm

Thyroid gland

Hollenberg A, Wiersinga W, Bartalena L, Feldt-Rasmussen U. Hyperthyroid disorders. In: Melmed S, Auchus RJ, Goldfine AB, Rosen CJ, Kopp PA, eds.

Williams Textbook of Endocrinology

. 15th ed. Philadelphia, PA: Elsevier; 2025:chap 10.

Pearce EN, Hollenberg AN. Thyroid. In: Goldman L, Cooney KA, eds.

Goldman-Cecil Medicine

. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 207.

Thiessen MEW. Thyroid and adrenal disorders. In: Walls RM, ed.

Rosen’s Emergency Medicine: Concepts and Clinical Practice

. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 117.

Updated by: Sandeep K. Dhaliwal, MD, board-certified in Diabetes, Endocrinology, and Metabolism, Springfield, VA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

Thyroid Diseases