If you have bed bug bites, they may or may not look like the ones on the pictures. The bed bug bite pictures are meant as a guidance that should be used to eliminate other common insect bites. Please note that allergic reactions and a few other insect bites can look exactly like bed bug bites, so you shouldn’t make this your only step in identifying the bite. If you aren’t sure, contact your doctor and let him or her look at it. So what do bed bug bites look like? Have a look at the bed bug bite pictures below and see if they look similar to your own bites. If you have been bitten by bed bugs, then you should start bed bug bite treatment as soon as possible.
Cutaneous reactions to bedbug bites can vary widely and are easily confused with other conditions (Table 1).15–19 A typical lesion is a 2- to 20-mm, pruritic, erythematous maculopapule with a central hemorrhagic crust or vesicle.5,8 Macules, papules, wheals (Figure 3), vesicles, bullae, and nodules have all been reported,20 as have asymptomatic lesions with a barely visible punctum as the only evidence of a bite.8 Bites vary in number and are preferentially distributed in unclothed areas (e.g., face, neck, extremities). Unlike many other arthropod and insect bites, bedbug bites are rarely located in the popliteal fossae or axillae.21 Lesions can be noticeable immediately when waking up or several days later, with the reaction often progressing from delayed to immediate with subsequent exposures22–26  (Table 2). The classic bedbug rash is referred to as “breakfast, lunch, and dinner” because it commonly presents as several bites in a row or cluster 20 (Figure 4).

I’ve encountered mosquito bites, flea bites and spider bites, but never had I encountered bed bug bites, that is until I travelled to San Francisco, CA. I made the trip at least four times a year; however, this time was different—opting to stay in a nearby hotel instead of with family or friends. I remember lying in bed. The room was hot and stuffy, causing me to toss and turn throughout the night. When morning came, I was exhausted but began my usual morning routine eager to get on the road. After a quick rinse, I dragged myself over to the mirror; that’s when I noticed them—little red bumps across my chest. Quickly, I scurried over to the bed—pulling off sheets, flipping pillows, inspecting the mattress and the box spring—nothing! Ugh, how could this have happened? It was a top-rated hotel. Were these bed bug bites, or was it another blood-sucking insect?
Unlike those of other insects, bed bug bites may sometimes appear in tight lines of multiple, small, red marks where multiple bed bugs have fed along an exposed area. Bed bug bites can cause itchiness. Initially, a victim may detect a slight burning sensation. The burning area then develops red bumps, known as papules or wheals (rash). In extreme cases, bites may swell dramatically or turn into blister-like skin inflammations.