Bed bugs: Difference between revisions
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==Background== | ==Background== | ||
*''Cimex lenticularis | *''Cimex lenticularis'' | ||
*Bed bug bites known as | *Bed bug bites are known as 'cimicosis' | ||
* | *Bed bugs are attracted to CO2, warmth, exposed surfaces | ||
* | *Tend to hide near beds, cracks, crevices | ||
*May appear translucent (nymphs,) brown (mature bug,) red (after meal,) black (after digestion | *Feed at night | ||
*Belong to Hemiptera like kissing bugs which are vectors for trypanosomiasis (Central and South America | *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== | ==Clinical Features== | ||
[[File:Bed bug, Cimex lectularius.jpg|thumb|Bed bug]] | [[File:Bed bug, Cimex lectularius.jpg|thumb|Bed bug]] | ||
[[File:Bedbug_with_classic_hemmoragic_appearance_and_punctate_center_2014-09-28_19-01.jpg|thumbnail|Bedbug with classic hemmoragic appearance and punctate center]] | [[File:Bedbug_with_classic_hemmoragic_appearance_and_punctate_center_2014-09-28_19-01.jpg|thumbnail|Bedbug with classic hemmoragic appearance and punctate center]] | ||
*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> | |||
*Pain immediately after bite | |||
*Erythematous papules, bullae, and wheals may take days to develop | |||
*Classic line of bites: "breakfast, lunch, and dinner" | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
{{Ectoparasite DDX}} | {{Ectoparasite DDX}} | ||
{{Hand Infection DDX}} | |||
== | ==Evaluation== | ||
Clinical diagnosis, based on history and physical exam. | *Clinical diagnosis, based on history and physical exam. | ||
==Management== | ==Management== | ||
*Antihistamine for | *Primarily supportive care | ||
*Consider topical steroids to decrease inflammation | *[[Antihistamine]] for [[pruritus]] | ||
*Consider [[topical steroids]] to decrease inflammation | |||
**No evidence that medications improve outcomes | **No evidence that medications improve outcomes | ||
*Treat systemic reactions similar to [[anaphylaxis]] (rare) | *Treat systemic reactions similar to [[anaphylaxis]] (rare) | ||
*Self-limited 1-2 weeks without treatment | *Self-limited 1-2 weeks without treatment | ||
*Eradication using pesticides | *Eradication using pesticides, hot water washing of bedding | ||
==Disposition== | ==Disposition== | ||
Discharge if no systemic | *Discharge if no evidence of systemic symptoms or anaphylaxis | ||
==See Also== | ==See Also== | ||
*[[Parasitic | *[[Parasitic diseases]] | ||
*[[Travel | *[[Travel medicine]] | ||
==External Links== | ==External Links== | ||
== | ==References== | ||
<references/> | <references/> | ||
[[Category:ID]] | [[Category:ID]] | ||
[[Category: | [[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
- 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
- Bed bugs
- Closed fist infection (Fight Bite)
- Hand cellulitis
- Hand deep space infection
- Hand-foot-and-mouth disease
- Herpetic whitlow
- Felon
- Flexor tenosynovitis
- Paronychia
- Scabies
- Sporotrichosis
Look-Alikes
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
- ↑ 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.