1. Bed bug bites are generally not random
Generally, bites from bedbugs will be clustered up in a single area where the bed bug will feed. When a bed bug feeds it will feed for a moment, then move a little, feed again and then move. Bed bugs will repeat this process until they are full and then retreat back to their hiding places.
2. Bed bug bites will generally follow a line
As mentioned above, bed bug will move around while they feed and many times. You will see the bed bug bites follow a path which can be in a straight line or in zigzag patterns. As pest professionals, we call these track marks. These track marks of bed bug bites are very specific to bed bug and when noticed can be a dead give away.
3. Bed bug bites can leave blood spots on the sheets
Bed bugs actually inject an anticoagulant into a person before they start feeding, this can lead to people to bleed out a little after they leave the area they just fed on. This will at times leave little blood spots on your sheets that came into contact with those areas directly after feeding.
4. Bed Bug Bites will generally be located in easy to access area where the skin is exposed
Bites will be found on easy to access areas of your skin not covered by clothes like arms, ankles, legs, shoulders, hands, and neck.
This is a quick and dirty guide to bed bug bites. If you find any or all of these symptoms to be evident then it would be important that you perform a quick inspection for bed bugs.