Bed bugs are small parasitic insects that prefer to feed on human blood. The name 'bedbug' is derived from the insects preferred habitat of houses and especially beds or other areas where people sleep. Bed bugs , though not strictly nocturnal, are mainly active at night and are capable of feeding unnoticed on the host. They can be found on their own but often congregate in dark crevices and lay eggs in fabric seams. Dwellings can become infested with bed bugs in several ways including, brought in on infested item such as clothing or furniture, brought in on host such as pet or pest, or just migrate over from a nearby dwelling that's infested if there are easy routes.
A number of health effects may occur due to bed bugs including skin rashes, psychological effects and allergic symptoms. Diagnosis involves both finding bed bugs and the occurence of compatible symptoms, treatment is otherwise symptomatic.
Eradication of bed bugs frequently requires a combination of pesticide and nonpesticide approaches. Pesticides that have historically been found to be effective include pyrethroids, dichloruos and malathion. Resistance to pesticides has increased significantly over time and there are concerns of negative health effects from their usage. Mechanical approaches such as vacuuming up the insects and heat treating or wrapping mattresses have been recommended.