Bedbugs By James G H Dinulos, MD, Geisel School of Medicine at Dartmouth Reviewed / Revised Dec 2021 | Modified Sep 2022 View Patient Education Etiology Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Bedbug Bites Bedbug Bedbug (Frontal View) Bedbug bites are usually painless but cause reactions, often pruritic, in susceptible patients.