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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 response to an infection or illness.

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:

Immunodeficiency Diseases

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...

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:

Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic

Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic

Healthcare-associated infections (HAIs) occur in a healthcare facility while a person receives care for another ailment. This category also includes work-related infections among healthcare staff.
HAIs significantly increase the cost of health care. Extended stays in healthcare institutions, increased disability, increased costs of medications, including specialized antibiotics, and prolonged recovery times add to the patient's expenses and the healthcare institution and funding bodies. Common...

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Related Experiment Video

Updated: May 30, 2026

Immunometabolic Circuits in Infection for Advancing Host Directed Therapies

Immunometabolic Circuits in Infection for Advancing Host Directed Therapies

Published on: September 13, 2024

[Intermittent fever under iatrogenic immunosuppression].

M Bönstrup¹, S Schmiedel, A W Lohse

¹I. Medizinische Klinik, Bernhard-Nocht-Klinik für Tropenmedizin, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, Hamburg, Germany.

|August 3, 2011

Summary

Fever of unknown origin in elderly patients can signal serious conditions. This case highlights everolimus-induced fever, which resolved quickly after adjusting immunosuppressive therapy.

Area of Science:

Geriatrics
Pharmacology
Internal Medicine

Background:

Prolonged fever of unknown origin and night sweats in the elderly necessitate a thorough investigation for malignancy and infections.

Related Experiment Videos

Last Updated: May 30, 2026

Immunometabolic Circuits in Infection for Advancing Host Directed Therapies

Immunometabolic Circuits in Infection for Advancing Host Directed Therapies

Published on: September 13, 2024

Fever of unknown origin (FUO) presents a diagnostic challenge, particularly in geriatric populations.