According to The American Academy of Dermatology, a bedbug rash is a series of raised, red welts on the body that often appear in a zigzag pattern. The bites cause itching and may cause blisters or skin infection in sensitive individuals. Bedbugs are often found on mattresses and bedding.
According to Orkin, bedbug bites may go undetected for several days due to the fact that the bites do not usually cause initial pain. Bedbugs feed on human blood by puncturing the skin with their beaks. Bedbug bites are most common on exposed areas of the body, such as the arms, back and legs.