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Related Concept Videos

Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

30
Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
30
Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

28
Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH...
28
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

26
Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor,...
26
Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

23
Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence...
23
Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

26
Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
26
Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

7.1K
Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The...
7.1K

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Related Experiment Video

Updated: Apr 30, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

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Hyperthyroidism and thyrotoxicosis.

Danielle Devereaux1, Semhar Z Tewelde1

  • 1Department of Emergency Medicine, University of Maryland Medical System, University of Maryland, 110 South Paca Street, 6th Floor, Suite 200, Baltimore, MD 21201, USA.

Emergency Medicine Clinics of North America
|April 29, 2014
PubMed
Summary
This summary is machine-generated.

Hyperthyroidism and thyrotoxicosis present diagnostic challenges due to overlapping symptoms. Early recognition and management of thyroid storm, a severe thyrotoxicosis complication, are critical for patient survival.

Keywords:
Graves diseaseHyperthyroidismThyroid stormThyroiditisThyrotoxicosis

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Area of Science:

  • Endocrinology
  • Internal Medicine
  • Emergency Medicine

Background:

  • Hyperthyroidism and thyrotoxicosis are hypermetabolic states associated with significant morbidity and mortality.
  • Diagnostic challenges arise from symptom mimicry, potentially leading to delayed or incorrect management.
  • Thyroid storm represents the most severe manifestation of thyrotoxicosis, characterized by altered sensorium and high mortality if untreated.

Purpose of the Study:

  • To highlight the diagnostic difficulties in hyperthyroidism and thyrotoxicosis.
  • To emphasize the critical importance of recognizing thyroid storm in patients with altered mental status.
  • To outline the essential role of emergency medicine physicians in the timely management of thyrotoxicosis.

Main Methods:

  • This is a review and clinical perspective piece.
  • It synthesizes current understanding of hyperthyroidism, thyrotoxicosis, and thyroid storm.
  • Focuses on clinical presentation, diagnostic considerations, and emergency management principles.

Main Results:

  • Symptoms of hyperthyroidism and thyrotoxicosis can mimic numerous other conditions.
  • Altered mental status is a key indicator for considering thyroid storm in differential diagnoses.
  • Prompt recognition, identification of precipitating factors, and initiation of medical management are vital.

Conclusions:

  • Effective management of thyrotoxicosis and thyroid storm requires rapid diagnosis and intervention.
  • Emergency physicians play a crucial role in improving outcomes for patients with these conditions.
  • Timely and comprehensive care by emergency medicine physicians can be life-saving.