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Related Concept Videos

Types of Fever01:25

Types of Fever

380
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:
380
Patterns of Fever01:26

Patterns of Fever

2.6K
Before understanding the types and patterns of fever, it is essential to know its phases.
2.6K
Increased Body Temperature01:25

Increased Body Temperature

685
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...
685
Methods of reducing fever01:22

Methods of reducing fever

672
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:
672
Acute Pharyngitis01:30

Acute Pharyngitis

738
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:
738
Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

20
Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...
20

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Related Experiment Video

Updated: Jul 11, 2025

Detection of Infectious Virus from Field-collected Mosquitoes by Vero Cell Culture Assay
07:23

Detection of Infectious Virus from Field-collected Mosquitoes by Vero Cell Culture Assay

Published on: June 9, 2011

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Fever of Unknown Origin.

Kathleen Ryan1

  • 1Infectious Disease, Department of Pediatric, Medical College of Wisconsin & Children's Hospital of Wisconsin, Suite C450, 999 North 92 nd Street, Wauwatosa, WI 53226, USA.

The Medical Clinics of North America
|November 11, 2023
PubMed
Summary

Fever of unknown origin in adolescents often involves infectious causes. While challenging, a thorough workup is key, with many cases being self-limiting and having a favorable prognosis.

Area of Science:

  • Pediatrics
  • Internal Medicine
  • Infectious Diseases

Background:

  • Fever of unknown origin (FUO) in adolescents presents diagnostic challenges.
  • Potential causes include infectious, inflammatory, and malignant processes.

Purpose of the Study:

  • To outline the diagnostic approach and common etiologies of FUO in adolescents.
  • To discuss the prognosis of FUO in this age group.

Main Methods:

  • Comprehensive patient history, including exposure history.
  • Serial physical examinations.
  • Targeted laboratory and imaging investigations.

Main Results:

  • In diagnosed cases, infectious etiologies are most common, followed by non-infectious inflammatory diseases.
Keywords:
FUOFever of unknown originPUOProlonged fever

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  • A significant proportion of adolescents with FUO have a self-limiting course with a favorable prognosis, even with non-diagnostic workups.

    • Conclusions:

    • Systematic evaluation is crucial for diagnosing FUO in adolescents.
    • Infectious causes are prevalent, but non-infectious and even undiagnosed cases often resolve favorably.