Reactions to bed bug bites differ from person to person from none to a full-blown allergic reaction. A mild reaction may reveal flat, red bumps at the bite sites. A more severe reaction may include an irritating itch (as in my case), or swelling. Resisting the itch is incredibly difficult, but giving in to it can cause severe irritation to the skin, increasing your risk for an infection. It’s the chemicals in the bed bug’s saliva that trigger such reactions, some lasting more than two weeks.
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.