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10/12/2015 Dengue Differential Diagnoses http://emedicine.medscape.com/article/215840differential 1/5 Dengue Differential Diagnoses Author: Suzanne Moore Shepherd, MD, MS, DTM&H, FACEP, FAAEM; Chief Editor: Michael Stuart Bronze, MD more... Updated: Oct 05, 2015 Diagnostic Considerations Studies indicate that as many as 50% of dengue cases may be misdiagnosed, as a result of inaccurate assessment of the signs and symptoms of disease presentation. This inaccuracy can lead to increased cost of treatment, such as unneeded hospitalizations, as well as possibly increased morbidity and mortality due to volume overload from overzealous use of intravenous fluids. [47] A Belgian study examined predictors of diagnosis in 1962 febrile travelers and expatriates returning from the tropics. After malaria was ruled out, the main predictors of dengue infection included skin rash, thrombocytopenia, and leukopenia. [48] Dengue must be carefully differentiated from preeclampsia during pregnancy. An overlap of symptoms and signs, including thrombocytopenia, impaired liver function, capillary leak, ascites, and decreased urine output may make this clinically challenging. Definitive diagnosis is confirmed via serology. Rare cases of vertical dengue transmission have been reported. If the mother acquires infection in the peripartum period, newborns should be evaluated for dengue with platelet counts and serologic studies. [49, 50] Other problems to be considered in the differential diagnosis of dengue include the following: Chikungunya virus Mayaro fever Ross River fever Sindbis virus Ebola virus Hemorrhagic fever viruses River Virus Chikungunya Orbivirus West Nile encephalitis Roseola infantum Scarlet fever Idiopathic thrombocytopenic purpura Differential Diagnoses Arenaviruses Influenza Leptospirosis Malaria Meningitis Rickettsial Infection Rocky Mountain Spotted Fever Typhus Viral Hepatitis Yellow Fever Workup Contributor Information and Disclosures Author Suzanne Moore Shepherd, MD, MS, DTM&H, FACEP, FAAEM Professor of Emergency Medicine, Education Officer, Department of Emergency Medicine, Hospital of the University of Pennsylvania; Director of Education and Research, PENN Travel Medicine; Medical Director, Fast Track, Department of Emergency Medicine Suzanne Moore Shepherd, MD, MS, DTM&H, FACEP, FAAEM is a member of the following medical societies: Alpha Omega Alpha, American Academy of Emergency Medicine, American Society of Tropical Medicine and Hygiene, International Society of Travel Medicine, Society for Academic Emergency Medicine, Wilderness Medical Society Disclosure: Nothing to disclose. Coauthor(s) Patrick B Hinfey, MD Emergency Medicine Residency Director, Department of Emergency Medicine, Newark Beth Israel Medical Center; Clinical Assistant Professor of Emergency Medicine, New York College of Osteopathic Medicine Patrick B Hinfey, MD is a member of the following medical societies: American Academy of Emergency

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Page 1: Dengue Differential Diagnoses

10/12/2015 Dengue Differential Diagnoses

http://emedicine.medscape.com/article/215840differential 1/5

Dengue Differential DiagnosesAuthor: Suzanne Moore Shepherd, MD, MS, DTM&H, FACEP, FAAEM; Chief Editor: Michael StuartBronze, MD more...

Updated: Oct 05, 2015

Diagnostic ConsiderationsStudies indicate that as many as 50% of dengue cases may be misdiagnosed, as aresult of inaccurate assessment of the signs and symptoms of disease presentation.This inaccuracy can lead to increased cost of treatment, such as unneededhospitalizations, as well as possibly increased morbidity and mortality due to volumeoverload from overzealous use of intravenous fluids.[47]

A Belgian study examined predictors of diagnosis in 1962 febrile travelers andexpatriates returning from the tropics. After malaria was ruled out, the mainpredictors of dengue infection included skin rash, thrombocytopenia, andleukopenia.[48]

Dengue must be carefully differentiated from preeclampsia during pregnancy. Anoverlap of symptoms and signs, including thrombocytopenia, impaired liver function,capillary leak, ascites, and decreased urine output may make this clinicallychallenging. Definitive diagnosis is confirmed via serology.

Rare cases of vertical dengue transmission have been reported. If the motheracquires infection in the peripartum period, newborns should be evaluated fordengue with platelet counts and serologic studies.[49, 50]

Other problems to be considered in the differential diagnosis of dengue include thefollowing:

Chikungunya virusMayaro feverRoss River feverSindbis virusEbola virusHemorrhagic fever virusesRiver VirusChikungunyaOrbivirusWest Nile encephalitisRoseola infantumScarlet feverIdiopathic thrombocytopenic purpura

Differential DiagnosesArenaviruses

Influenza

Leptospirosis

Malaria

Meningitis

Rickettsial Infection

Rocky Mountain Spotted Fever

Typhus

Viral Hepatitis

Yellow Fever

Workup

Contributor Information and DisclosuresAuthorSuzanne Moore Shepherd, MD, MS, DTM&H, FACEP, FAAEM Professor of Emergency Medicine, EducationOfficer, Department of Emergency Medicine, Hospital of the University of Pennsylvania; Director of Educationand Research, PENN Travel Medicine; Medical Director, Fast Track, Department of Emergency Medicine

Suzanne Moore Shepherd, MD, MS, DTM&H, FACEP, FAAEM is a member of the following medical societies:Alpha Omega Alpha, American Academy of Emergency Medicine, American Society of Tropical Medicine andHygiene, International Society of Travel Medicine, Society for Academic Emergency Medicine, WildernessMedical Society

Disclosure: Nothing to disclose.

Coauthor(s)Patrick B Hinfey, MD Emergency Medicine Residency Director, Department of Emergency Medicine, NewarkBeth Israel Medical Center; Clinical Assistant Professor of Emergency Medicine, New York College ofOsteopathic Medicine

Patrick B Hinfey, MD is a member of the following medical societies: American Academy of Emergency

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10/12/2015 Dengue Differential Diagnoses

http://emedicine.medscape.com/article/215840differential 2/5

Medicine, Wilderness Medical Society, American College of Emergency Physicians, Society for AcademicEmergency Medicine

Disclosure: Nothing to disclose.

William H Shoff, MD, DTM&H Director, PENN Travel Medicine; Associate Professor, Department of EmergencyMedicine, Hospital of the University of Pennsylvania, University of Pennsylvania School of Medicine

William H Shoff, MD, DTM&H is a member of the following medical societies: American College of Physicians,American Society of Tropical Medicine and Hygiene, International Society of Travel Medicine, Society forAcademic Emergency Medicine, Wilderness Medical Society

Disclosure: Nothing to disclose.

Chief EditorMichael Stuart Bronze, MD David Ross Boyd Professor and Chairman, Department of Medicine, Stewart GWolf Endowed Chair in Internal Medicine, Department of Medicine, University of Oklahoma Health ScienceCenter; Master of the American College of Physicians; Fellow, Infectious Diseases Society of America

Michael Stuart Bronze, MD is a member of the following medical societies: Alpha Omega Alpha, AmericanMedical Association, Oklahoma State Medical Association, Southern Society for Clinical Investigation,Association of Professors of Medicine, American College of Physicians, Infectious Diseases Society of America

Disclosure: Nothing to disclose.

AcknowledgementsJoseph Domachowske, MD Professor of Pediatrics, Microbiology and Immunology, Department of Pediatrics,Division of Infectious Diseases, State University of New York Upstate Medical University

Joseph Domachowske, MD is a member of the following medical societies: Alpha Omega Alpha, AmericanAcademy of Pediatrics, American Society for Microbiology, Infectious Diseases Society of America, PediatricInfectious Diseases Society, and Phi Beta Kappa

Disclosure: Nothing to disclose.

Hagop A Isnar, MD, FACEP Department of Emergency Medicine, Crouse Hospital

Hagop A Isnar, MD, FACEP is a member of the following medical societies: American College of EmergencyPhysicians, American Medical Association, and Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Thomas M Kerkering, MD Chief of Infectious Diseases, Virginia Tech, Carilion School of Medicine, Roanoke,Virginia

Thomas M Kerkering, MD is a member of the following medical societies: Alpha Omega Alpha, AmericanCollege of Physicians, American Public Health Association, American Society for Microbiology, American Societyof Tropical Medicine and Hygiene, Infectious Diseases Society of America, Medical Society of Virginia, andWilderness Medical Society

Disclosure: Nothing to disclose.

Deborah Sentochnik, MD Consulting Staff, Department of Internal Medicine, Division of Infectious Disease,The Mary Imogene Bassett Hospital

Deborah Sentochnik, MD is a member of the following medical societies: American College of Physicians,Infectious Diseases Society of America, and Medical Society of the State of New York

Disclosure: Nothing to disclose.

Russell W Steele, MD Head, Division of Pediatric Infectious Diseases, Ochsner Children's Health Center;Clinical Professor, Department of Pediatrics, Tulane University School of Medicine

Russell W Steele, MD is a member of the following medical societies: American Academy of Pediatrics,American Association of Immunologists, American Pediatric Society, American Society for Microbiology,Infectious Diseases Society of America, Louisiana State Medical Society, Pediatric Infectious Diseases Society,Society for Pediatric Research, and Southern Medical Association

Disclosure: Nothing to disclose.

Francisco Talavera, PharmD, PhD, Adjunct Assistant Professor, University of Nebraska Medical CenterCollege of Pharmacy; EditorinChief, Medscape Drug Reference

Disclosure: Medscape Reference Salary Employment

Mary L Windle, PharmD, Adjunct Associate Professor, University of Nebraska Medical Center College ofPharmacy; EditorinChief, Medscape Drug Reference

Disclosure: Nothing to disclose.

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