It is important to remember that they have a very flat body that allows it to hide almost anywhere. During the initial onset of the infestation, they are only visible around the tufts and seams of the mattress. As the infestation grows, these bugs spread out and inhabit larger and larger areas. Generally they prefer rough surfaces like wood or paper for their harborages.
Bedbugs are obligate blood parasites that belong to the insect family Cimicidae. Cimex lectularius and Cimex hemipterus, the two bedbug species that feed primarily on humans, are oval, reddish-brown, flat, and wingless. Adults are typically 4 to 7 mm in length (Figure 1). Nymphs can be as small as 1 mm, and are translucent and lighter in color 5,7 (Figure 2). Adult females produce 200 to 500 eggs in a typical six- to 12-month life span.5,8 Bedbugs can withstand temperatures from 44.6°F to 113°F (7°C to 45°C).8
Checking beds for bed bugs was a common practice long ago, especially while traveling. Travelers today should consider doing the same, preferably before unpacking. This would entail examining the bed sheets and seams of the mattress and perhaps box spring for signs of bed bugs, especially along the head (pillow end) of the bed. Experts also remove and check behind headboards since this is a frequent hiding place for bed bugs in hotels. Headboards are heavy and cumbersome, however, and untrained persons should not attempt removal themselves.
Bed bugs tend to congregate, but it’s also common to find a single bug or some eggs here and there. A thorough inspection and treatment may take up to several hours. Some companies use specially trained dogs to assist in finding small dispersed infestations, especially in such places as hotels, schools, libraries and office buildings. When properly trained, bed bug detection dogs can be quite effective. Relatively few companies are routinely using them, however, due to the expense of training and maintaining such animals. Reliability of some of the dogs is also being questioned as more enter the market.    
Most bites will have a small clear area in the center surrounded by redness that may or may not be raised. People tend to become more sensitive and have larger reactions after each episode. Reactions can include itch, swelling, rash and wheals (large round red area on the skin). Severe reactions can cause skin blisters and trouble breathing, although these reactions are very rare. 
Bed bugs hide in seams of mattresses, box springs, bed frames, headboards, dresser tables, inside cracks or crevices, behind wallpaper, or any other clutter or objects around a bed during the day. Bed bugs are transmitted from place to place as people travel. They can be in the seams and folds of luggage, overnight bags, folded clothes, bedding, furniture, or anywhere else they find a place to hide.
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.  

Hi, I’ve been in my apartment for over 8 years. We just had new neighbors move into our building. Now me and my children are getting bit at night by something. So, this morning, I was sitting on the couch in my bedroom and a bug crawled up my pants’ leg. I captured it in a plastic bag. I believe it’s a bed bug but is there a way to submit a picture to you, so you can take a look? Thank you!
The likelihood of bed bugs increases if the affected individual has been traveling, or if they have acquired used beds or furnishings before symptoms started to appear. Bed bugs also are suspect if you wake up with itchy welts you did not have when you went to sleep. It’s important to recognize, however, that not all bite-like reactions are due to bed bugs. Confirmation requires finding and identifying the bed bugs, shed skins, fecal spots, etc., which often requires the help of a professional. (Other possible sources of irritation that may be mistaken for bed bugs are discussed in University of Kentucky entomology fact sheet ENT-58, Invisible Itches: Insect and Non-Insect Causes). 
My daughter stayed at a friends for 2 nights…. And brought home bedbugs!! She has bites from the top of her head to her feet. The itching must be horrific. Poor child. After 2 days of not being able to stop the itching, as a last resort (on a Sun at 11pm) I told her to use a bathroom spray cleaner that had bleach in it. She only put it on her legs, but the itching stopped there, just not on arms, stomach or in her head. Don’t recommend bleach but she was able to get a couple hours of sleep. I will try several things to try to help her that I have read from previous comments. Thanks everyone….
Bed bugs occur in all regions of the globe.[7] Rates of infestations are relatively common, following an increase since the 1990s.[3][4][6] The exact causes of this increase is unclear; with proposals including greater travel, more frequent exchange of second-hand furnishings, a greater focus on control of other pests, and increasing resistance to pesticides.[4] Bed bugs have been known human parasites for thousands of years.[2]
I have read a lot and saw a video where professionals can heat up your house with a machine to 140deg which will kill the bed bugs.They do make bed bug sprays (raid and others) and you can get mattress covers at wallmart. the ones for allergens will do. Don’t forget to seal up zippers. Read you can mix baking soda and water to a paste put it on for an hour or so. Wichazel, st johns wort and lemon juice, aloe and peppermint oil in tub may help relieve itch. Hope this helps.

The size of bed bug bites varies with a number of different factors. Bed bugs inject an anti-coagulant along with their saliva when they pierce the skin to take a blood meal. This anti-coagulant is mostly responsible for how a person reacts to the bite and determines the size of the bug’s bite. Since people will have various sensitivities to the bed bug’s bite, the size of the bite will vary, as well. Another factor that influences the size of a bed bug reaction is the number of times a person is bitten. Bite reactions of people bitten many times are also variable, and their response may be either more or less intense as the number of bites increases.
×