Last reviewed: November 2017
Last updated: November  2017

Summary

Differentials

Common

  • Urinary tract infection
  • Pneumonia
  • Sinusitis
  • Meningitis
  • Bacteremia (occult)
  • Sepsis
  • Septic arthritis
  • Osteomyelitis
  • Cat-scratch disease
  • Viral syndromes
  • Infectious mononucleosis
  • Cytomegalovirus infection
  • Malaria infection
  • Lyme disease
  • Tuberculosis
  • Kawasaki disease
  • Juvenile idiopathic arthritis (JIA)
  • Systemic lupus erythematosus
  • Rheumatic fever
  • Crohn disease
  • Ulcerative colitis
  • Leukemia
  • Non-Hodgkin lymphoma
  • Drug-related fever
  • Vaccine reaction

Uncommon

  • Typhoid infection (enteric fever)
  • Infective endocarditis
  • Hepatic abscess
  • Cerebral abscess
  • Streptococcal toxic shock syndrome
  • Staphylococcal toxic shock syndrome
  • Tularemia
  • Brucellosis
  • Leptospirosis
  • Encephalitis
  • Myocarditis
  • Herpes simplex virus (HSV) infection
  • Human immunodeficiency virus (HIV) infection
  • Toxoplasmosis
  • Rocky Mountain spotted fever
  • Sarcoidosis
  • Hodgkin lymphoma
  • Thyroid storm
  • Serotonin syndrome
  • Serum sickness/serum sickness-like reaction
  • Factitious fever
  • Munchausen syndrome by proxy
  • Heat-related illness
  • Pediatric autonomic disorders

Contributors

Authors VIEW ALL

Paul Ishimine

Director

Pediatric Emergency Medicine

Department of Emergency Medicine

UC San Diego Health System

Fellowship Director

Pediatric Emergency Medicine

Rady Children's Hospital, San Diego

Clinical Professor of Emergency Medicine and Pediatrics

University of California

San Diego School of Medicine

San Diego

CA

Disclosures

PI declares that he has no competing interests.

Peer reviewers VIEW ALL

Associate Professor

Departments of Pediatrics and Surgery

Director of Pediatric Emergency Medicine Education

Duke University School of Medicine

Durham

NC

Disclosures

LY declares that he has no competing interests.

Pediatric Emergency Medicine

Children's Healthcare of Atlanta at Scottish Rite

Atlanta

GA

Disclosures

PS declares that he has no competing interests.

Consultant in Paediatric Infectious Diseases

Evelina Children's Hospital

London

UK

Disclosures

EM declares that she has no competing interests.

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