Fever of unknown origin classification: Difference between revisions

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==Overview==
==Overview==
Based upon the work of Petersdorf and Beeson, Durack and Street classified fever of unknown origin(FUO) into four distinct categories in 1991:<ref name="pmid32462043">{{cite journal| author=Wright WF, Auwaerter PG| title=Fever and Fever of Unknown Origin: Review, Recent Advances, and Lingering Dogma. | journal=Open Forum Infect Dis | year= 2020 | volume= 7 | issue= 5 | pages= ofaa132 | pmid=32462043 | doi=10.1093/ofid/ofaa132 | pmc=7237822 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32462043  }}</ref>
Based upon the work of Petersdorf and Beeson, Durack and Street classified [[fever of unknown origin]](FUO) into four distinct categories in 1991:<ref name="pmid32462043">{{cite journal| author=Wright WF, Auwaerter PG| title=Fever and Fever of Unknown Origin: Review, Recent Advances, and Lingering Dogma. | journal=Open Forum Infect Dis | year= 2020 | volume= 7 | issue= 5 | pages= ofaa132 | pmid=32462043 | doi=10.1093/ofid/ofaa132 | pmc=7237822 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32462043  }}</ref>


#Classical FUO
#Classic FUO
#Neutropenic FUO
#Neutropenic FUO
#HIV related FUO
#[[Human Immunodeficiency Virus (HIV)|HIV]] related FUO
#Nosocomial FUO<ref name="pmid22475734">{{cite journal| author=Hayakawa K, Ramasamy B, Chandrasekar PH| title=Fever of unknown origin:  an evidence-based review. | journal=Am J Med Sci | year= 2012 | volume= 344 | issue= 4 | pages= 307-16 | pmid=22475734 | doi=10.1097/MAJ.0b013e31824ae504 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22475734  }}</ref>
#[[Nosocomial]] FUO<ref name="pmid22475734">{{cite journal| author=Hayakawa K, Ramasamy B, Chandrasekar PH| title=Fever of unknown origin:  an evidence-based review. | journal=Am J Med Sci | year= 2012 | volume= 344 | issue= 4 | pages= 307-16 | pmid=22475734 | doi=10.1097/MAJ.0b013e31824ae504 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22475734  }}</ref>


==Classification==
==Classification==


===Classic FUO<ref name="pmid224757342">{{cite journal| author=Hayakawa K, Ramasamy B, Chandrasekar PH| title=Fever of unknown origin:  an evidence-based review. | journal=Am J Med Sci | year= 2012 | volume= 344 | issue= 4 | pages= 307-16 | pmid=22475734 | doi=10.1097/MAJ.0b013e31824ae504 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22475734  }}</ref>===


There is no established system for the classification of [disease name].
*Fever above 38.3° C (100.9° F)
*For more than three weeks
*No diagnosis after work up for at least three visits in outdoor  or three days of stay in hospital.


OR
===Neutropenic FUO===


[Disease name] may be classified according to [classification method] into [number] subtypes/groups:
*Fever above 38.3° C (100.9° F)
*[[Absolute neutrophil count]] not more than 500 cells per mm³
*Minimum diagnostic work up for at least three days.


*[Group1]
===HIV associated FUO===
*[Group2]
*[Group3]
*[Group4]


OR
*Known HIV case
*Fever above 38.3° C (100.9° F)
*Time span of more than four weeks for non hospitalized while 3 days for hospitalized patients.


[Disease name] may be classified into [large number > 6] subtypes based on:
===Nosocomial FUO===


*[Classification method 1]
*Patient in hospital for at least 24 hours
*[Classification method 2]
*Absence of fever or incubating fever at admission
*[Classification method 3]
*Minimum diagnostic workup for at least three days.
 
[Disease name] may be classified into several subtypes based on:
 
*[Classification method 1]
*[Classification method 2]
*[Classification method 3]
 
OR
 
Based on the duration of symptoms, [disease name] may be classified as either acute or chronic.
 
OR
 
'''If the staging system involves specific and characteristic findings and features:'''
 
According to the [staging system + reference], there are [number] stages of [malignancy name] based on the [finding1], [finding2], and [finding3]. Each stage is assigned a [letter/number1] and a [letter/number2] that designate the [feature1] and [feature2].
 
OR
 
The staging of [malignancy name] is based on the [staging system].
 
OR
 
There is no established system for the staging of [malignancy name].


==References==
==References==

Latest revision as of 15:45, 25 January 2021

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

Based upon the work of Petersdorf and Beeson, Durack and Street classified fever of unknown origin(FUO) into four distinct categories in 1991:[1]

  1. Classic FUO
  2. Neutropenic FUO
  3. HIV related FUO
  4. Nosocomial FUO[2]

Classification

Classic FUO[3]

  • Fever above 38.3° C (100.9° F)
  • For more than three weeks
  • No diagnosis after work up for at least three visits in outdoor or three days of stay in hospital.

Neutropenic FUO

  • Fever above 38.3° C (100.9° F)
  • Absolute neutrophil count not more than 500 cells per mm³
  • Minimum diagnostic work up for at least three days.

HIV associated FUO

  • Known HIV case
  • Fever above 38.3° C (100.9° F)
  • Time span of more than four weeks for non hospitalized while 3 days for hospitalized patients.

Nosocomial FUO

  • Patient in hospital for at least 24 hours
  • Absence of fever or incubating fever at admission
  • Minimum diagnostic workup for at least three days.

References

  1. ↑ Wright WF, Auwaerter PG (2020). "Fever and Fever of Unknown Origin: Review, Recent Advances, and Lingering Dogma". Open Forum Infect Dis. 7 (5): ofaa132. doi:10.1093/ofid/ofaa132. PMC 7237822 Check |pmc= value (help). PMID 32462043 Check |pmid= value (help).
  2. ↑ Hayakawa K, Ramasamy B, Chandrasekar PH (2012). "Fever of unknown origin: an evidence-based review". Am J Med Sci. 344 (4): 307–16. doi:10.1097/MAJ.0b013e31824ae504. PMID 22475734.
  3. ↑ Hayakawa K, Ramasamy B, Chandrasekar PH (2012). "Fever of unknown origin: an evidence-based review". Am J Med Sci. 344 (4): 307–16. doi:10.1097/MAJ.0b013e31824ae504. PMID 22475734.

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