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May 19, 2013
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Bedbugs

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Bedbugs Overview

A bedbug is a small, blood-sucking parasite that feeds on mammals and birds. Bedbugs belong to the insect family Cimicidae, and although there are several different species, the most common species associated with human infestations are Cimex lectularius and Cimex hemipterus. There has been a recent resurgence in bedbug infestations worldwide, particularly in developed countries, including the United States.

Adult bedbugs are reddish brown in color, flat, oval-shaped, and approximately 4-5 millimeters in length. Immature bedbugs (nymphs) may be translucent or light tan in color. Bedbugs are often more red in color after feeding. Bedbugs are attracted by warmth, and they generally feed during the night, often just before dawn. They tend to feed every five to 10 days, though they can survive without feeding for several months. Bedbugs pierce the skin and inject saliva which contains anesthetics and anticoagulants into the host which often make their bites painless initially. After feeding on the host's blood for several minutes, bedbugs will retreat to their hiding place. They will generally try to remain within close range of their warm-blooded host. Affected individuals may feel and see the consequences of the bedbug bite sometime afterward. Though bedbug transmission of human diseases is theoretically possible, it has not yet been definitively established.

Picture of an adult bedbug
Picture of an adult bedbug

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Bed Bugs - Initial Symptoms

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What were your initial symptoms for bed bugs?

Bedbugs - Treatment

The eMedicineHealth physician editors ask:

What treatment did you use to get rid of bedbugs?

Treatment of Bedbug Bites

Self-Care at Home

Bedbug bites usually do not require any treatment. If you develop itching of the skin around the site of the bite, you can use an over-the-counter antihistamine pill or cream such as diphenhydramine(Benadryl). Try to avoid scratching your skin, as this can cause skin breakdown and a subsequent skin infection. Some individuals may also experience relief from the itching by applying a hot washcloth directly to the affected area.

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