Bedbugs are a group of insects that feed on human blood. Over the past decade, these pest have made a comeback in our society. Being nocturnal insects, bedbugs typically feed on human blood while their victims sleep at night. During the day these insects will hide in mattress seams, bed frames, outlet receptacles, furniture, molding, and other crevices. Although the bite of these pest are not painful, many people will exhibit swelling and itching at the bite area.
For more information, try these links:
From the United States Environmental Protection Agency: Link
From the University of Kentucky: Link