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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:

Acute Pharyngitis

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:

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...

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Related Experiment Video

Updated: Apr 24, 2026

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique

Published on: September 23, 2022

Fever in children.

¹Stepping Hill Hospital, Stockport, Cheshire.

Nursing Standard (Royal College of Nursing (Great Britain) : 1987)

|September 4, 2014

Summary

This summary is machine-generated.

Fever is an elevated body temperature, typically above 38°C, indicating a systemic inflammatory response. This immune system reaction is often triggered by infection.

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Area of Science:

Medicine
Immunology
Physiology

Background:

Fever, or elevated body temperature, is a common physiological response.
It signifies a deviation from normal daily temperature variations.

Purpose of the Study:

To define fever and its diagnostic thresholds.
To explain the underlying physiological mechanism of fever.

Main Methods:

Clinical temperature measurements using rectal, tympanic, oral, and axillary methods.
Observation of systemic inflammatory responses.

Main Results:

Specific temperature thresholds for fever diagnosis: ≥38°C (rectal/tympanic), ≥37.5°C (oral), ≥37.2°C (axillary).
Fever is identified as a component of the immune system's inflammatory response.

Conclusions:

Fever is a critical indicator of infection and systemic inflammation.
Accurate temperature measurement is essential for fever diagnosis and patient management.