Bed bug bites are similar to those of a flea or mosquito but appear slightly swollen, reddish and irritated. People allergic to bed bug bites develop painful swellings and anaphylaxis, according to Centers for Disease Control and Prevention.
Bed bug bites may appear in a straight line or randomly, notes Centers for Disease Control and Prevention. Bed bug bites frequently occur on the arms, face, neck and hands. Those with bed bug bites experience localized itching, raised skin bumps and reddish-colored skin lesions that disappear after one to two weeks, reports eMedicineHealth. Most people do not react after bed bug bites, and it is difficult to identify them without identifying bed bug infestation symptoms, explains Centers for Disease Control and Prevention.