The decline of bed bug populations in the 20th century is often credited to potent pesticides that had not previously been widely available. Other contributing factors that are less frequently mentioned in news reports are increased public awareness and slum clearance programs that combined pesticide use with steam disinfection, relocation of slum dwellers to new housing, and in some cases also follow-up inspections for several months after relocated tenants moved into their new housing.
One interesting thing is: many of my small lesions seem to be permanent. I have had some of the prominent ones for more than a year and they show no signs of shrinking or going away. I am not particularly worried about skin cancer because the permanent lesions are all very regular in appearance; skin-cancer lesions are usually irregular in shape and color.
Medical treatment is usually not needed for bedbug bites. If required, medical treatment is aimed at relieving the symptoms (like itching) caused by bedbug bites. In the rare cases of a systemic allergic reaction or a secondary skin infection, evaluation by a health care professional may be necessary. Individuals may also want to seek medical care if they are unsure of what is causing their skin lesions.
One bed bug will usually take more than one bite. Once a bed bug inserts its mouthparts and finds a suitable blood vessel, it will begin feeding. However, finding the right blood vessel may take more than one injection into the skin. In addition, bed bugs are very sensitive to movement by the host they are feeding on. Therefore, if a sleeping person moves, a feeding bed bug will probably withdraw its mouthparts and begin its search for a blood meal on another part of the body. It’s important to remember that the number of bites a person receives is not indicative of the number of bed bugs that feed on that person.