Bed bugs: Difference between revisions
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==Background== | ==Background== | ||
*''Cimex lenticularis | *''Cimex lenticularis'' | ||
*Bed bug bites known as Cimicosis | *Bed bug bites known as Cimicosis | ||
*Attracted to CO2, warmth, exposed surfaces | *Attracted to CO2, warmth, exposed surfaces | ||
*Hide near beds, cracks, crevices | *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== | ||
*Up to 20% of patients do not experience | *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 | *Pain immediately after bite | ||
*Erythematous papules, bullae, and wheals may take days to develop | *Erythematous papules, bullae, and wheals may take days to develop | ||
*Classic line of bites: "breakfast, lunch, and dinner" | *Classic line of bites: "breakfast, lunch, and dinner" | ||
[[File:Bed bug, Cimex lectularius.jpg|thumb|Bed bug]] | [[File:Bed bug, Cimex lectularius.jpg|thumb|Bed bug]] | ||
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{{Ectoparasite DDX}} | {{Ectoparasite DDX}} | ||
== | ==Diagnosis== | ||
Clinical diagnosis, based on history and physical exam. | Clinical diagnosis, based on history and physical exam. | ||
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*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 and other traditional approaches | *Eradication using pesticides and other traditional approaches | ||
==Disposition== | ==Disposition== | ||
Discharge if no systemic | Discharge if no systemic symptoms | ||
==See Also== | ==See Also== | ||
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==External Links== | ==External Links== | ||
== | ==References== | ||
<references/> | <references/> | ||
[[Category:ID]] | [[Category:ID]] | ||
[[Category:Derm]] | [[Category:Derm]] | ||
Revision as of 16:03, 1 February 2016
Background
- Cimex lenticularis
- Bed bug bites known as Cimicosis
- Attracted to CO2, warmth, exposed surfaces
- 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
Diagnosis
Clinical diagnosis, based on history and physical exam.
Management
- Antihistamine for pruritis
- 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 and other traditional approaches
Disposition
Discharge if no systemic symptoms
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.