I was at a friend’s house in the afternoon for 3.5 hrs and woke up at 3 am with severe itching, and pain, on my back. My entire back was covered in bites/rashes, clear lines and clusters. I had no idea what it was and went to the doc. Someone suggested shingles. Doc said definitely bug bites. I talked to my friend and they admitted to having seen bed bugs on the couch “recently.” Freaking out I flipped over my entire bedroom, found nothing. Washed the clothes I wore in hot water and high heat drier. I am hoping that the feeding occured during those few hours and no buggs travelled with me. All I had was me, no stuff. Can they “migrate” on people?
Bed bugs can exist singly, but tend to congregate once established. Although strictly parasitic, they spend only a tiny fraction of their lifecycles physically attached to hosts. Once a bed bug finishes feeding, it relocates to a place close to a known host, commonly in or near beds or couches in clusters of adults, juveniles, and eggs—which entomologists call harborage areas or simply harborages to which the insect returns after future feedings by following chemical trails. These places can vary greatly in format, including luggage, inside of vehicles, within furniture, among bedside clutter—even inside electrical sockets and nearby laptop computers. Bed bugs may also nest near animals that have nested within a dwelling, such as bats, birds, or rodents. They are also capable of surviving on domestic cats and dogs, though humans are the preferred host of C. lectularius.
The size of bed bug bites varies with a number of different factors. Bed bugs inject an anti-coagulant along with their saliva when they pierce the skin to take a blood meal. This anti-coagulant is mostly responsible for how a person reacts to the bite and determines the size of the bug’s bite. Since people will have various sensitivities to the bed bug’s bite, the size of the bite will vary, as well. Another factor that influences the size of a bed bug reaction is the number of times a person is bitten. Bite reactions of people bitten many times are also variable, and their response may be either more or less intense as the number of bites increases.