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Related Concept Videos

Homeostatic Imbalances in Body Temperature01:19

Homeostatic Imbalances in Body Temperature

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Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
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Increased Body Temperature01:25

Increased Body Temperature

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A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
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Types of Fever01:25

Types of Fever

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Fever can be triggered by several factors, including infections, nervous system disorders, certain cancers, blood diseases like leukemia, embolism, thrombosis, heatstroke, dehydration, surgical trauma, crushing injuries, and allergic reactions.
Here are the different types of fever:
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Methods of reducing fever01:22

Methods of reducing fever

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The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
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Decreased Body Temperature01:29

Decreased Body Temperature

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A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
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Mechanisms of Heat Transfer01:14

Mechanisms of Heat Transfer

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Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
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Related Experiment Video

Updated: Apr 14, 2026

A Preclinical Model of Exertional Heat Stroke in Mice
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A Preclinical Model of Exertional Heat Stroke in Mice

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Heat stroke.

Lisa R Leon1, Abderrezak Bouchama2

  • 1US Army Research Institute of Environmental Medicine, Natick, Massachusetts, USA.

Comprehensive Physiology
|April 17, 2015
PubMed
Summary
This summary is machine-generated.

Heat stroke, a severe heat illness, involves high body temperature and central nervous system dysfunction. Recent research explores risk factors, inflammatory mediators, and advanced cooling strategies for better outcomes.

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Last Updated: Apr 14, 2026

A Preclinical Model of Exertional Heat Stroke in Mice
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Area of Science:

  • Environmental and occupational health
  • Physiology
  • Toxicology

Background:

  • Heat stroke is a critical medical emergency characterized by extreme body temperature and neurological impairment.
  • It occurs in two main forms: classic heat stroke in vulnerable populations and exertional heat stroke in active individuals.
  • Long-term effects are linked to systemic inflammatory response syndrome.

Purpose of the Study:

  • To review recent advancements in identifying heat stroke risk factors.
  • To re-evaluate the roles of endotoxins and cytokines in multi-organ damage.
  • To examine novel cooling strategies and biomarkers for heat stroke management.

Main Methods:

  • Comprehensive literature review of recent scientific advances.
  • Analysis of research on risk factors, inflammatory mediators, and thermoregulation.
  • Evaluation of clinical biomarkers and cooling techniques.

Main Results:

  • Identified diverse risk factors including environmental, medical, and genetic predispositions.
  • Highlighted the need to reassess the role of endotoxins and cytokines in heat stroke.
  • Challenged traditional views on hypothalamic damage, emphasizing regulated thermoregulatory responses.

Conclusions:

  • Heat stroke management requires a nuanced understanding of risk factors and inflammatory pathways.
  • Further research is needed for sensitive biomarkers and effective cooling strategies.
  • Advances in understanding thermoregulation offer new therapeutic avenues for heat stroke recovery.