Difference between revisions of "Bed bugs"

m (Rossdonaldson1 moved page Bed Bugs to Bed bugs)
(Differential Diagnosis)
 
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[[File:Bedbug_with_classic_hemmoragic_appearance_and_punctate_center_2014-09-28_19-01.jpg|thumbnail|Bedbug with classic hemmoragic appearance and punctate center]]
 
 
 
==Background==
 
==Background==
''Cimex lenticularis''
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*''Cimex lenticularis''  
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*Bed bug bites are known as 'cimicosis'
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*Bed bugs are attracted to CO2, warmth, exposed surfaces
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*Tend to hide near beds, cracks, crevices
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*Feed at night
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*May appear translucent (nymphs,) brown (mature bug,) red (after meal,) black (after digestion)
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*Belong to ''Hemiptera'' (like kissing bugs) which are vectors for trypanosomiasis (Central and South America)
  
 
==Clinical Features==
 
==Clinical Features==
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[[File:Bed bug, Cimex lectularius.jpg|thumb|Bed bug]]
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[[File:Bedbug_with_classic_hemmoragic_appearance_and_punctate_center_2014-09-28_19-01.jpg|thumbnail|Bedbug with classic hemmoragic appearance and punctate center]]
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*Up to 20% of patients do not experience symptoms<ref>Jerome Goddard & Richard deShazo (2009). "Bed bugs (Cimex lectularius) and clinical consequences of their bites". Journal of the American Medical Association 301 (13): 1358–1366. PMID 19336711.</ref>
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*Pain immediately after bite
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*Erythematous papules, bullae, and wheals may take days to develop
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*Classic line of bites: "breakfast, lunch, and dinner"
  
 
==Differential Diagnosis==
 
==Differential Diagnosis==
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{{Ectoparasite DDX}}
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{{Hand Infection DDX}}
  
==Workup==
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==Evaluation==
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*Clinical diagnosis, based on history and physical exam.
  
 
==Management==
 
==Management==
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*Primarily supportive care
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*[[Antihistamine]] for [[pruritus]]
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*Consider [[topical steroids]] to decrease inflammation
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**No evidence that medications improve outcomes
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*Treat systemic reactions similar to [[anaphylaxis]] (rare)
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*Self-limited 1-2 weeks without treatment
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*Eradication using pesticides, hot water washing of bedding
  
 
==Disposition==
 
==Disposition==
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*Discharge if no evidence of systemic symptoms or anaphylaxis
  
 
==See Also==
 
==See Also==
*[[Parasitic Diseases]]
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*[[Parasitic diseases]]
*[[Travel Medicine]]
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*[[Travel medicine]]
  
 
==External Links==
 
==External Links==
  
==Sources==
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==References==
 
<references/>
 
<references/>
  
 
[[Category:ID]]
 
[[Category:ID]]
[[Category:Derm]]
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[[Category:Dermatology]]

Latest revision as of 21:33, 28 January 2020

Background

  • Cimex lenticularis
  • Bed bug bites are known as 'cimicosis'
  • Bed bugs are attracted to CO2, warmth, exposed surfaces
  • Tend to hide near beds, cracks, crevices
  • Feed at night
  • May appear translucent (nymphs,) brown (mature bug,) red (after meal,) black (after digestion)
  • Belong to Hemiptera (like kissing bugs) which are vectors for trypanosomiasis (Central and South America)

Clinical Features

Bed bug
Bedbug with classic hemmoragic appearance and punctate center
  • Up to 20% of patients do not experience symptoms[1]
  • Pain immediately after bite
  • Erythematous papules, bullae, and wheals may take days to develop
  • Classic line of bites: "breakfast, lunch, and dinner"

Differential Diagnosis

Domestic U.S. Ectoparasites

See also travel-related skin conditions

Hand and finger infections

Evaluation

  • Clinical diagnosis, based on history and physical exam.

Management

  • Primarily supportive care
  • Antihistamine for pruritus
  • Consider topical steroids to decrease inflammation
    • No evidence that medications improve outcomes
  • Treat systemic reactions similar to anaphylaxis (rare)
  • Self-limited 1-2 weeks without treatment
  • Eradication using pesticides, hot water washing of bedding

Disposition

  • Discharge if no evidence of systemic symptoms or anaphylaxis

See Also

External Links

References

  1. Jerome Goddard & Richard deShazo (2009). "Bed bugs (Cimex lectularius) and clinical consequences of their bites". Journal of the American Medical Association 301 (13): 1358–1366. PMID 19336711.