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Increased Body Temperature

Increased Body Temperature

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...

Types of Fever

Types of Fever

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:

Patterns of Fever

Patterns of Fever

Before understanding the types and patterns of fever, it is essential to know its phases.

Methods of reducing fever

Methods of reducing fever

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:

Homeostatic Imbalances in Body Temperature

Homeostatic Imbalances in Body Temperature

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...

Decreased Body Temperature

Decreased Body Temperature

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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Related Experiment Video

Updated: Mar 9, 2026

A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy

A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy

Published on: July 12, 2021

Fever.

Avind Rampersad¹, Deepa Mukundan

¹Department of Pediatrics, University of Toledo College of Medicine, Toledo, Ohio 43608, USA.

Current Opinion in Pediatrics

|February 27, 2009

Summary

Accurate prediction of serious illness in febrile children requires better diagnostic markers. Future research will focus on applying host immune response understanding to fever diagnosis and management.

Area of Science:

Pediatrics
Infectious Diseases
Immunology

Background:

Fever is a common symptom in children, necessitating accurate diagnosis and management.
Understanding the host's immune response is crucial for identifying the causes of fever.
Current diagnostic predictors for serious illness in febrile children are still under investigation.

Purpose of the Study:

To review current advances in the field of fever in children.
To explore clinical and diagnostic predictors for early diagnosis of serious disease.
To discuss the role of host susceptibility and immune response in fever pathogenesis.

Main Methods:

Comprehensive literature review of publications from the past 18 months.
Analysis of clinical and diagnostic predictors for serious disease in children with fever.

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Published on: August 25, 2012

Related Experiment Videos

Last Updated: Mar 9, 2026

A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy

A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy

Published on: July 12, 2021

Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

Published on: November 21, 2017

Protocol for Long Duration Whole Body Hyperthermia in Mice

Protocol for Long Duration Whole Body Hyperthermia in Mice

Published on: August 25, 2012

Review of host susceptibility and immune response in understanding fever pathogenesis.

Main Results:

Predictors for serious disease in febrile children are still being explored for targeted therapy.
Significant strides are being made in understanding host susceptibility and immune response in fever.
Efficacy of antipyretics and fever as a screening tool were also discussed.

Conclusions:

Improved markers are needed to predict serious bacterial infections in febrile children.
Clinical application of host immune response is the future direction for fever diagnosis and management.