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A Method for Evaluating Insecticide Efficacy against Bed Bug, Cimex lectularius, Eggs and First Instars
Published on: March 15, 2017
Bed bugs - What the GP needs to know
Stephen L Doggett1, Richard Russell
1Department of Medical Entomology, ICPMR, Westmead Hospital, New South Wales. stephen.doggett@swahs.health.nsw.gov.au
Background:
Since the mid 1990s, there has been a global resurgence of bed bugs (Cimex spp.), which are blood feeding insects that readily bite humans. Patients suffering with bite reactions are increasingly presenting to medical practitioners.
Objective:
This article reviews the various clinical consequences of bed bug bites and outlines management strategies.
Discussion:
Common dermatological responses include the early development of small macular spots that may later progress into prominent wheals accompanied by intense itching. Patients exposed to numerous bed bugs can present with a widespread erythematous rash or urticaria. Bullous eruptions are not uncommon and anaphylaxis has been reported, albeit rarely. There is no evidence that bed bugs transmit human pathogens, but they are responsible for significant psychological distress, can produce anaemia when abundant, and have been implicated in the triggering of asthmatic reactions. Symptomatic control involves treatment of the patient with antihistamines and corticosteroids, and ensuring that the infestation responsible for the problem is effectively eliminated.
Insights
Bed bug bites cause itchy rashes and significant psychological distress. Management involves treating symptoms with antihistamines and corticosteroids, alongside eliminating the infestation.
Area of Science:
- Medical Entomology
- Dermatology
- Public Health
Background:
- Global resurgence of bed bugs (Cimex spp.) since the mid-1990s.
- Bed bugs are blood-feeding insects that readily bite humans.
- Increasing patient presentations to medical practitioners for bite reactions.
Purpose of the Study:
- Review clinical consequences of bed bug bites.
- Outline management strategies for bed bug bites.
Main Methods:
- Literature review of clinical consequences.
- Summary of management strategies.
Main Results:
- Dermatological responses range from macular spots to wheals, urticaria, and bullous eruptions.
- Anaphylaxis is a rare but reported complication.
- Bed bugs cause psychological distress, potential anemia, and can trigger asthma; no evidence of pathogen transmission.
Conclusions:
- Symptomatic treatment includes antihistamines and corticosteroids.
- Effective elimination of the bed bug infestation is crucial for management.
- Understanding clinical manifestations and psychological impact is key for patient care.
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