yuck. that's utterly vile. this is from some medical site

"Bed bugs live in any articles of furniture, clothing, or bedding, so they or their eggs may be present in used furniture or clothing. They spread by crawling and may contaminate multiple rooms in a home or even multiple dwellings in apartment buildings. They may also be present in boxes, suitcases, or other goods that are moved from residence to residence or from a hotel to home. Bed bugs can live on clothing from infested homes and may be spread by a person unknowingly wearing infested clothing"

Symptoms
Bed bugs bite and suck blood from humans. Bed bugs are most active at night and bite any exposed areas of skin while an individual is sleeping. The face, neck, hands, and arms are common sites for bed bug bites. The bite itself is painless and is not noticed. Small, flat, or raised bumps on the skin are the most common sign; redness, swelling, and itching commonly occur. If scratched, the bite areas can become infected. A peculiarity of bed bug bites is the tendency to find several bites lined up in a row. Infectious disease specialists refer to this as the "breakfast, lunch, and dinner" sign signifying the sequential feeding that occurs from site to site.

Bed bug bites may go unnoticed or be mistaken for flea or mosquito bites or other types of rash or skin conditions, since they are difficult to distinguish from other bites. Bed bugs also have glands whose secretions may leave odors, and they also may leave dark fecal spots on bedsheets and around their hiding places (in crevices or protected areas around the bed or anywhere in the room)