# Thyroid Emergency Warning Signs

URL: https://thethyroidologist.com/topics/thyroid-emergency-warning-signs/
Section: Topics
Last medically reviewed: 2025-11-15

> Recognise the rare but serious thyroid emergencies — thyroid storm, myxoedema coma, airway compression and severe low calcium after surgery.

Most thyroid conditions are not emergencies, but a few complications are life-threatening and need immediate care. Knowing the warning signs helps you act quickly.
If you are seriously unwell, do not wait for a routine appointment — seek emergency medical help.

## Thyroid storm

Thyroid storm is a rare complication of severe hyperthyroidism, often triggered by infection, surgery, trauma or stopping treatment. Features include high fever, a very fast heart rate, agitation or confusion, vomiting and sometimes heart failure.
It requires emergency hospital treatment.

## Myxoedema coma

Myxoedema coma is severe, decompensated hypothyroidism. It causes profound drowsiness or unconsciousness, low body temperature, slow heart rate and low blood sugar, often in an older person with untreated or undertreated hypothyroidism.
It is a medical emergency requiring urgent hormone replacement and supportive care.

## Airway compression

A very large goitre or a rapidly enlarging neck mass can press on the windpipe, causing noisy breathing, breathlessness or difficulty lying flat. Bleeding into a nodule can cause sudden enlargement.
Seek emergency care for stridor or severe breathing difficulty.

## Severe low calcium after surgery

After thyroid surgery, the parathyroid glands can be disturbed, causing low calcium. Tingling around the mouth or fingers, muscle cramps or twitching can progress to seizures if untreated.
Report these symptoms urgently after surgery.

## Frequently asked questions

### Is thyroid storm common?

No — it is rare, but it is a medical emergency when it occurs.

### What should I do if I suspect thyroid storm?

Seek emergency medical care immediately. Do not wait for a routine appointment.

### Can thyroid problems cause breathing difficulty?

A large goitre or neck mass can compress the airway. Breathing difficulty needs urgent assessment.

## Disclaimer

The content on this website is for general educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your specific condition.

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Part of The Thyroidologist — https://thethyroidologist.com