Related Experiment Video
Updated: May 12, 2026

07:01
An Orthotopic Mouse Model of Anaplastic Thyroid Carcinoma
Published on: April 17, 2013
A case of apathetic thyroid storm with resultant hyperthyroidism-induced hypercalcemia
Kristine I Parker1, Aundrea Loftley, Carmina Charles
1Department of Endocrinology, Metabolism & Medical Genetics, The Medical University of South Carolina, Charleston, North Carolina.
The American Journal of the Medical Sciences
|April 24, 2013
Summary
A rare apathetic thyroid storm presentation in a 63-year-old woman was linked to hypercalcemia. Treatment resolved both hypercalcemia and thyrotoxicosis, highlighting a crucial clinical association.
Area of Science:
- Endocrinology
- Internal Medicine
Background:
- Thyroid storm, a severe thyrotoxicosis complication, typically presents with hyperthermia, tachycardia, and altered mental status.
- Apathetic thyroid storm is a rare variant, often overlooked due to its subtle presentation.
Observation:
- A 63-year-old woman presented with apathetic thyrotoxicosis and significant hypercalcemia.
- The hypercalcemia was not attributable to malignancy, immobility, hypervitaminosis D, or primary hyperparathyroidism.
Findings:
- Thyroid hormones can increase bone resorption, leading to hypercalcemia in thyrotoxicosis.
- This case highlights hypercalcemia as a potential manifestation of apathetic thyroid storm, even without other contributing factors.
Implications:
- Recognizing hypercalcemia in apathetic thyroid storm is crucial for accurate diagnosis and management.
- Effective medical management of thyrotoxicosis can resolve associated hypercalcemia.
Related Concept Videos
Hyperthyroidism I: Introduction
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...
Hyperthyroidism II: Pathophysiology
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 receptors...
Graves Disease II: Pathophysiology
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, and heat...
Graves' Disease I: Introduction
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 in...
Hypothyroidism II: Pathophysiology
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...
Skeleton and Calcium Homeostasis
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.