If you stayed in a hotel or motel, or anywhere else and you wake up with bite marks, there are some things to consider. Could it be bed bugs? Of course, that is possible, but there are other options as well. In many hotels and motels, they will inspect the room for bed bugs and if they don’t find any, they will say it isn’t their problem. There are other possibilities and whoever is in charge of the rooms needs to realize this.
If bed bugs aren’t present, then it is possible there are dermanyssid mites in the room if pigeons or swallows are nesting on the building. If birds leave a nest infested with dermanyssid mites, the mites can go in the building and bite the occupants. A much lesser chance is that the bites are from ceratopogonid flies (no-see-ums). These flies have to breed in very damp soil. If there is very damp soil near the building, then ceratopogonid flies could be the cause of the bites. They are small enough to fit through a window screen. If any pests are found in a room, then all the nearby rooms should be inspected as well. Not everyone shows bite marks when bitten by bed bugs. I have been bitten and never showed a mark. If no pests of any kind are found, then you should probably see a dermatologist as the bite like scars may be a result of some chemical reaction.
Some people believe it could be spider bites. If it is one bite, you may have rolled over on a spider and it would bite you. If there are multiple bites, it isn’t spiders. Spiders don’t normally bite people unless they are squeezed or if they are guarding their eggs. I pick up spiders all the time, including black widows and brown recluse and none have ever tried to bite me as I never squeezed them. I have posted many photos of me holding black widows and other spiders on my Facebook page. Spiders need their venom to get food and do not like to waste it biting people unless they really feel threatened.
Finally, if you hire someone to inspect your home for bed bugs, make sure they are knowledgeable about dermanyssid mites and ceratopogonid flies. If they are not, call another company.