What will a bite look like?
When a bed bug feeds on the blood of a person or animal, saliva is injected into the bite wound, which contains proteins that often cause some form of an allergic response from the host. The severity of this allergic reaction varies greatly, and some people may not realize they have been bitten at all. However, most people experience some level of inflammation, swelling, reddening, and itchiness at the bite site. There is nothing unique about the bed bug bite, which is why the detected presence of the bugs themselves is needed for diagnosis of a bed bug infestation.