Think Extermination Ends Your Bedbug Woes? Think Again

MONDAY, Feb. 12, 2018 (HealthDay News) — Long after you rid your home of unwelcome bedbugs, chemicals they leave behind in their droppings may continue to haunt you, a new study shows.

In people, the immune system releases histamines to protect the body. These chemicals help other immune system chemicals to repair damaged cells or fight off germs.

But histamines that bedbugs shed can cause rashes and trigger respiratory problems in humans, researchers from North Carolina State University found.

Bedbugs give off high levels of histamine in their droppings, the study authors explained. For these pests, histamines serve as a marker to help them congregate in places where they can find sleeping people or food.

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