A thyroid storm is a dangerous and acute manifestation of hyperthyroidism that can develop when an individual is untreated or undertreated. Thyroid storms are very rare; only one to two percent of all people with hyperthyroidism progress to the point of crisis. When the event does occur, it is considered a medical emergency, with mortality rates between 10 and 25%. Anyone who believes they are experiencing a thyroid storm should seek medical attention immediately.


1. What Is the Thyroid?

The thyroid is in the neck, above the collarbone. The organ is part of the endocrine system and is responsible for making hormones, including triiodothyronine (T3) and thyroxine (T4). These hormones have vast effects on the body; they increase the metabolic rate, stimulate fat breakdown, impact blood flow and body temperature, and are essential for normal growth and development.

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