A definitive diagnosis of health effects due to bed bugs requires a search for and finding of the insect in the sleeping environment as symptoms are not sufficiently specific. Bed bugs classically form a line of bites colloquially referred to as "breakfast, lunch, and dinner" and rarely feed in the armpit or behind the knee which may help differentiate it from other biting insects. If the number in a house is large a pungent sweet odor may be described. There are specially trained dogs that can detect this smell.
Turns out, C. lectularius is also forming a resistance to other insecticides, according to a study published online April 10, 2017, in the Journal of Economic Entomology. The researchers, from Purdue University, found that three out of 10 bedbug populations collected in the field showed much less susceptibility to chlorfenapyr, and five of the 10 populations showed reduced susceptibility to bifenthrin, according to a post on Entomology Today. The scientists defined "reduced susceptibility" as a population in which more than 25 percent of the begbugs survived after seven days of exposure to the particular insecticide.
I’ve encountered mosquito bites, flea bites and spider bites, but never had I encountered bed bug bites, that is until I travelled to San Francisco, CA. I made the trip at least four times a year; however, this time was different—opting to stay in a nearby hotel instead of with family or friends. I remember lying in bed. The room was hot and stuffy, causing me to toss and turn throughout the night. When morning came, I was exhausted but began my usual morning routine eager to get on the road. After a quick rinse, I dragged myself over to the mirror; that’s when I noticed them—little red bumps across my chest. Quickly, I scurried over to the bed—pulling off sheets, flipping pillows, inspecting the mattress and the box spring—nothing! Ugh, how could this have happened? It was a top-rated hotel. Were these bed bug bites, or was it another blood-sucking insect?
Bites on dogs and cats will look much like bites on people, and the pet owner may actually suspect a mosquito or flea bit the pet. As with people, bed bugs do not stay on pets, but return to a protected harborage site after feeding. In addition to bites, the presence of the bug’s feces, cast skins and the animal’s irritation at night are also indicators of bed bugs biting pets. Therefore, one of the best things to do is inspect the pet’s bedding and frequently groom the animal while being vigilant for the telltale signs of bed bug presence.