What Do Bed Bug Bites Look Like?
What do bed bug bites look like? In most cases, they show up as small itchy bumps or red marks that appear in a line, a loose cluster, or a zigzag pattern on skin that was exposed while you slept. Some people get only a few faint marks, while others develop swelling, a rash, or larger welts.
Use the photos below to compare the bite pattern and the skin reaction, then check for signs around the bed before you assume bed bugs are the cause.
Pattern of Bed Bug Bites: Line and Cluster
The pictures above are great examples of the pattern a bed bug makes when they bite you. They usually feed in a line or move around in a cluster, especially when there is more than one bug.
There are two sections to the mouth part. One injects a mixture of anticoagulant and anesthetic, while the other mouth part sucks up your blood. As a result, multiple bugs could bite your body, which you may not notice until you wake up and discover yourself covered in red bumps!
However, just because you have multiple bites does not mean you were bitten by more than one bug. In many of these pictures, it only took one to do all this damage!
Bed bug rash
As shown above, some people develop a rash due to the bed bug’s saliva, ranging from small red itchy bumps to large welts.
The first photo shows how these bites can swell and turn red. In the second image, you see intense swelling and reaction to the bed bugs’ saliva.
Take a look at those large painful blisters in the fifth picture! This woman had an allergic reaction to the bites. Always seek the help of a medical professional if you have concerns about your bites!
Bed bug bites on black people
Many visitors ask us, “What do bed bug bites look like on black people?” In the photos above, you can compare bites on darker skin tones, including black, Hispanic, and Asian skin. The pattern is usually the same, small bumps in a line, cluster, or grouped patch, but the color can be harder to spot at first.
When redness does not stand out clearly, look for swelling, raised areas, itchiness, skin texture changes, and repeated bites in the same general pattern. On darker skin, bed bug bites may look more like small irritated bumps, deeper pink or brown marks, or patches that feel rough before they look obvious. If you are unsure, compare the bite pattern, where the bites showed up, and whether new marks appeared after sleeping.
Bed bug bites on human legs
These photos show how bed bug bites often appear on the legs, one of the most common places people notice them first. Legs are frequently exposed at night, especially calves, ankles, and areas just above the sock line, so bed bugs can feed there without much trouble.
On legs, the bites often show up as a short line, a tight cluster, or several bumps spaced a little apart. Some stay small and itchy, while others swell into larger welts after scratching or a stronger skin reaction. If you wake up with new bites on your legs over several mornings, and the marks keep appearing in a repeated pattern, bed bugs are one possible cause worth checking for.
Bed bug bites on human arms
Arms are another common place to notice bed bug bites because they are often left uncovered while you sleep. Forearms, wrists, hands, and the upper arm near the shoulder can all be easy feeding spots, especially if you sleep with your arms outside the blanket.
On the arms, bed bug bites often appear as a small line, a loose row, or a few itchy bumps grouped together. Some people get only faint raised marks, while others develop larger welts or more obvious swelling. If bites keep showing up on exposed arms after sleeping, and the pattern looks repeated rather than random, that can be another clue that bed bugs may be involved.
Bites on children
The mother of the first photo took her young son to the doctor and confirmed these bites were from bed bugs, and here is what she wrote us:
I am so glad I found your website. My family and I just returned from vacation two days ago, and my youngest children are covered with bed bug bites; at first, we did not know what they were.
The bites started after the first night of staying there. They increased in number and became worse over the week. We had no clue. Bed bugs never crossed our minds. I took them to the doctor as soon as we got home, and we got the news, BED BUGS!
I was disgusted and freaking out! I still am, and I can’t sleep at night. I worry that we brought them home and feel my children’s pain. They are pitiful! The bites do not seem to be clearing up and itch like crazy.
Another visitor had her neck badly bitten by bed bugs. For many months, her baby boy had bite marks which doctors initially suggested might be scabies or fleas.
A few months later, when her older son complained of his skin crawling in the middle of the night, she checked on the baby and found his bed frame and mattress covered with bed bugs, with many in the process of feeding!
The poor baby was helpless to do anything while being bitten. If you see something like this, it may indicate the infestation is close and should be easy to locate. If you think you may have brought them home, our guide on how to get rid of bed bugs walks you through the next steps.
If you need help finding them, look at our pictures of bed bug infestations.
If these bite photos still look familiar, compare more examples on our more bed bug bite pictures. If the pattern still points to bed bugs, go next to our how to get rid of bed bugs guide or our bed bug photo page to compare the bugs themselves.