Have you tried the hot-water cure? It’s old fashioned but works for all kinds of bites (mosquitoes, fleas, BB, sand fleas and poison ivy and oak and also for bee and wasp strings but not spider or venomous bites) . My doctor told me about it when I was pregnant and had got bitten by sand fleas. You take a very hot shower, as you put the water hotter and hotter, the itching increases dramatically. You do this until it starts burning SLIGHTLY, BE CAREFUL NOT TO BURN YOURSELF!
This pair of bed bug bite photos below show the immediate (left) and next day (right) reaction after feeding a colony of bedbugs from a container in the lab. (That's why they are contained in a small circular area). The hive-like immediate symptoms are replace by dark red rash type reaction the following day with inflammation and less severe redness radiating out to a larger area.
Bedbugs can live in any area of the home and use tiny cracks in furniture as well as on textiles and upholstered furniture as hiding places. They tend to be most common in areas where people sleep and generally concentrate in beds, including mattresses or mattress covers, box springs, and bed frames. They do not infest the sleeping surfaces of beds as commonly as cracks and crevices associated with the bed frame and mattress. Other sites where bedbugs often reside include curtains, edges of carpet, corners inside dressers and other furniture, cracks in wallpaper (particularly near the bed), and inside the spaces of wicker furniture.
Bed bugs were mentioned in ancient Greece as early as 400 BC, and were later mentioned by Aristotle. Pliny's Natural History, first published circa AD 77 in Rome, claimed bed bugs had medicinal value in treating ailments such as snake bites and ear infections. (Belief in the medicinal use of bed bugs persisted until at least the 18th century, when Guettard recommended their use in the treatment of hysteria.)
In comparison to other insect bites, bed bug bite marks are usually in groups of three or more when they appear on the skin. This is sometimes called the “breakfast, lunch and supper bites”. As you can see in the picture below, the bites are rather close to each other. Their bites often look like little red bumps, pimples or even blisters and welts. Some people can also mistake them for flea bites. If one of these insects bite you, you usually won’t even feel it as it uses a form of anesthetic which dulls the pain. Bed bugs also are known to leave bite marks in a straight line, also in close proximity to each other. A single bed bug can bite you a number of times during the night. However, if you have a bed bug infestation, there are usually a large number of these little pests and this can result in a multitude of bite marks. Please also remember that some people may not have a negative reaction to these bites. In fact, sometimes they are mistaken for spider bites, even by medical professionals so make sure you let your doctor know if you feel it could be a bite from bedbugs. Lastly, you will be happy to learn that bed bugs do not fly so you won’t be attacked from the air.
Bites on dogs and cats will look much like bites on people, and the pet owner may actually suspect a mosquito or flea bit the pet. As with people, bed bugs do not stay on pets, but return to a protected harborage site after feeding. In addition to bites, the presence of the bug’s feces, cast skins and the animal’s irritation at night are also indicators of bed bugs biting pets. Therefore, one of the best things to do is inspect the pet’s bedding and frequently groom the animal while being vigilant for the telltale signs of bed bug presence.