These blood suckers lock on to the carbon dioxide (CO2) release when sleeping. Once they have you, they head toward a warm part of your body and begin to bite. Two tubes are inserted into your body; one is used to inject a mixture of anticoagulant and anesthetic while the other is used to suck up your blood. You never notice the bites until you wake up and realize you were the main course!
Unlike those of other insects, bed bug bites may sometimes appear in tight lines of multiple, small, red marks where multiple bed bugs have fed along an exposed area. Bed bug bites can cause itchiness. Initially, a victim may detect a slight burning sensation. The burning area then develops red bumps, known as papules or wheals (rash). In extreme cases, bites may swell dramatically or turn into blister-like skin inflammations.