Infestations with bedbugs date back to ancient Egypt.1 The incidence of bedbugs in developed countries decreased in the 1940s because of the availability of more effective pesticides (especially DDT) and improved economic and social conditions.2 In the past decade, however, a significant resurgence of bedbug populations has occurred. This is attributed to a combination of factors, including increased pesticide resistance, more frequent travel, lack of public awareness, and inadequate pest control programs.3 In a 2010 survey, 95 percent of more than 500 U.S. pest management companies reported encountering a bedbug infestation during the preceding year, compared with only 25 percent of companies during 2000.4 Bedbugs spread actively by migrating from one infested room to another, often through ventilation ducts. They also spread passively, carried in the seams of travelers’ luggage, bedding, or furniture.5 Bedbugs do not travel directly on human hosts.6
Treatment is symptomatic. Eliminating bed bugs from the home is often difficult. Part of this is because bed bugs can live for a year between feeding. Repeated treatments of a home may be required. These treatments may include heating the room to 50 °C (122 °F) for more than 90 minutes, frequent vacuuming, washing clothing at high temperatures, and the use of various pesticides.
The bites of bedbugs can be difficult to identify, and not all red bites are due to bedbugs. Mosquitos, fleas, biting gnats, and mites can all bite humans. Collecting and identifying the bugs can help establish the diagnosis. They can often be found beneath or on the seams of mattresses. Their bloodstains may be visible even in the absence of bedbugs. You should also look into nooks and crannies of furniture, walls, and floors if you're suspicious that bedbugs may be present.
Hello! Almost overnight I have had a series of small bumps appear on my chest. These bumps look like pimples and they don’t itch at all. I had bed bugs well over a year ago and once they were treated I never saw anything except these bumps recently. My sister thinks I’m just being paranoid because we’ve both checked the bed and saw no signs. And because my chest is always covered, but my arms and legs that are are exposed never have places. I realize that I’m probably being paranoid, but I just wanted an outside opinion.
The size of bed bug bites varies with a number of different factors. Bed bugs inject an anti-coagulant along with their saliva when they pierce the skin to take a blood meal. This anti-coagulant is mostly responsible for how a person reacts to the bite and determines the size of the bug’s bite. Since people will have various sensitivities to the bed bug’s bite, the size of the bite will vary, as well. Another factor that influences the size of a bed bug reaction is the number of times a person is bitten. Bite reactions of people bitten many times are also variable, and their response may be either more or less intense as the number of bites increases.