Are Bedbugs Big Enough to See

Bedbug bites can closely resemble several other types of bug bites. The following bugs are known to be active at night.

Is It Bedbugs, Other Bug Bites, or a Rash?

It’s estimated that one out of five Americans has had a bedbug infestation or knows somebody who has.

Despite the name, bedbugs aren’t only found in beds. They’re also commonly found in sofas, chair cushions, and furniture crevices.

If you’ve been finding red and itchy spots on your skin, you may be worried you’re dealing with bedbugs.

However, unless you find evidence of the insects in your home, the bites can be difficult to identify. They can resemble other insect bites or several skin conditions.

There’s no test that can specifically diagnosis a bedbug bite, but a doctor may be able to help you identify them by ruling out other conditions like hives or a fungal infection.

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Keep reading to learn how to identify a bedbug bite and how to tell them apart from other insect bites and skin conditions.

A note on skin color

Bug bites and rashes can look different on different types of skin. Generally speaking, they are pink or purple on dark skin, and red on light skin.

There are more than 90 types of bedbugs, but only two species commonly bite humans.

Most bedbugs are reddish-brown with a flat, oval-shaped body. They’re usually about a quarter-inch long, have six legs, and don’t have visible wings.

Identifying bed bug bites on humans

Bedbug bites tend to look similar to other insect bites. The bites are very itchy, and smaller than a quarter-inch across. In white skin, the bites usually appear red. On dark skin, they can look faint-pink or purplish, and turn deep brown the longer they remain on the skin.

However, they can also develop into large weals (itchy, fluid-filled bumps) that can be larger than 2 inches.

Bedbug bites typically occur on parts of your body that are exposed while you sleep, such as your:

Bite marks often appear in the “breakfast, lunch, dinner” pattern — a line or zigzag of three or more bites.

Bedbug bites can closely resemble several other types of bug bites. The following bugs are known to be active at night.

Spiders

Share on Pinterest A brown widow spider bite can look similar to other spider bites, with the local skin reaction usually limited to redness and swelling. Systemic symptoms are often noticeable and can include muscle spasms, nausea, and headache, among others. Photo: http://wolfspiderpictures.org

Many types of spiders are more active at night than during the day. Getting bitten by a spider in your sleep is fairly uncommon. Spiders generally only bite when they feel threatened.

Most types of spiders have toxic venom. The majority of spiders don’t have strong enough venom to cause serious harm to humans and only cause minor injury.

Spider bites may cause the following symptoms:

Unlike bedbugs, spiders don’t feed on blood. Spider bites are more likely to be isolated while bedbug bites are often clustered together.

Mosquitos

Share on Pinterest Mosquito bites cause raised, itchy welts. They typically don’t appear in a line or pattern. Source: Wikimedia Commons

Mosquitos use their long tube-like mouth to penetrate your skin. Many types of mosquitos are more active at dusk and night than during the day.

Although mosquito bites usually aren’t serious, mosquitos can carry deadly diseases like:

Mosquito bites leave an itchy welt that looks like a pimple. It usually goes away in a few days.

Although mosquito and bedbug bites can look similar, mosquito bites are more likely to be in a random pattern and are larger in size than bedbug bites. Bedbug bites are more likely to be in a straight line or zigzag.

Mites

Share on Pinterest An oak mite bite generally doesn’t have specific traits of identification. Oak mites are microscopic, so they can’t be seen by the naked eye. Getty Images.

Mites are small insect-like critters that often live on animals like birds and rodents. Mite bite symptoms can vary but generally include:

a rash
hard or inflamed bumps that are red on light skin or dark purple or brown on dark skin.
itchiness
swollen skin

Mite bites are very small and don’t create a noticeable puncture like most other types of bug bites.

Fleas

Share on Pinterest Flea bites tend to occur on the feet, ankles, or lower leg. Source: Getty Images.

Your chances of getting bit by a flea are greater if you have pets or if you sleep with your pets in the bed.

People often mistake flea bites for bedbug bites. Both types of bites are usually itchy and are found in lines or clusters. Fleas typically target your:

If you notice bites on your upper body or around your face, they’re more likely to be bedbug bites.

Are Bedbugs Big Enough to See?

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Adult bedbugs are indeed visible to the human eye — although some of us may need to put on our prescription glasses.

Bedbugs are usually about the size of an apple seed, which is about 5 to 7 millimeters long, according to the Environmental Protection Agency.

These pests can resemble a lot of other household bugs, so it’s important to know the difference between bedbugs and similar ones, like the carpet beetle or cockroach.

Keep reading to find out how to detect and identify bedbugs — as well as how to get rid of them if they’re in your home.

What they look like

Bedbugs can vary slightly in appearance by region. They usually have a few similarities, though, including:

Size. Their eggs are roughly the size of a pinhead. Adults are the size of an apple seed.
Color. Bedbugs are brown to reddish-brown.
Shape. They may have an oval-shaped or elongated body.
Smell. They have a musty smell.
Wings. Although they have wings, bedbugs don’t fly.

It’s important to know that young bedbugs aren’t visible to the naked eye (unless they’ve eaten recently). They’re usually very small and translucent to whitish-yellow in color.

Where to find them

Sometimes, you may not see the bugs themselves, but instead the remains they leave behind. This includes:

red or rust-colored stains on bedsheets or mattress due to the bedbugs being crushed
bedbug poop, which looks like dark dots that may appear blurry
small eggs or shells of eggs

You may spot these remains when cleaning or changing bedding. Bedbugs can hide virtually anywhere that’s large enough to fit a credit card. Therefore, you can find them not only in a bed, but also:

in curtain folds
in drawer joints
under loose wallpaper
in chair seams

Bedbugs prefer to feed off humans (lucky us). They usually feed at night while you’re sleeping, so you’re less likely to be aware of them. However, some bedbugs will feed during the day.

Some ways you can recognize a bedbug bite include:

a curved-shape pattern to the bedbug bites of usually three to four bites
intense itching, usually in the morning
bites that are usually about 2 to 4 millimeters in size
bites that occur mostly on the arms and legs
bites that have small blisters on top of them

Bedbug bites may also cause allergic reactions. This can include itching, redness, and swelling at the bug bite site.

If you aren’t sure whether a bite is from a bedbug, see your dermatologist or primary care doctor. The bites can look like flea, mosquito, scabies, or body lice bites.

Share on Pinterest Bites from bedbugs can appear as red, itchy bumps.

Getting bedbugs doesn’t have anything to do with how clean your home is.

Bedbugs are “hitchhikers” that many people can pick up accidentally while traveling. They can get onto your clothes while staying in a hotel or at another person’s home, and you bring them home.

You can also accidentally bring bedbugs home when purchasing used furniture.

Bedbugs can survive for up to 1 year without feeding. It’s important to inspect your items, even when they’ve been in storage for some time.

Treating bedbugs usually involves a comprehensive approach where you not only treat bedding, but also clean up any clutter and other items where bedbugs and their eggs may be.

Sometimes, if an infestation is severe, you may have to call a professional.

Here are some recommended approaches to removing these unwelcome critters.

Heat

Bedbugs usually can’t survive past temperatures between 114°F (45°C) and 115°F (46°C), according to Virginia Tech.

Pest management professionals may use special steam cleaning devices that deliver steam consistently and in such a way that it doesn’t spread bedbugs and their eggs to other locations.

Pest management professionals may also use special heaters placed in a room that heat it to high temperatures to kill the bugs. However, special care must be taken for items in the room to ensure they’re not melted or damaged due to the high heat.

While steam cleaning can effectively eliminate bedbugs, you still must clean up other cluttered areas where the bedbugs are. It’s not a one-stop method.

Diatomaceous earth (DE)

Diatomaceous earth is a dust you can apply to areas such as bed frames, carpets, and even pet bedding. The dust sticks to the bedbugs and basically dries them up from the inside out, killing them.

Different types of diatomaceous earth exist. Ones that work on bedbugs include an animal food additive and insecticide.

Don’t use the diatomaceous earth type that’s in pool filters. This type is an inhalation hazard inside the home.

Insecticides

Insecticides, such as those that contain pyrethroids, are somewhat effective for killing bedbugs. This is because you can usually apply them to cracks and crevices, but not directly to all areas where bedbugs are.

Mattress encasements

Mattress encasements are special impermeable covers that keep bedbugs from entering your mattress as well as existing bedbugs from escaping. These covers must encase both the mattress and all box springs.

You can also purchase encasements for pillows. All encasements must have a zipper protector that’s zipped tightly closed to ensure there’s no route for bedbugs to enter or leave.

You can purchase encasements for mattresses and pillows online.

Clutter cleanup

While you can treat bedding and other areas of your home with insecticides, there are some items you can’t treat. This includes unused clutter, such as:

newspapers
magazines
junk mail

If you don’t use an item anymore, place it in a sealed bag and throw it away. Also place clothing and other washable materials in sealed bags for washing.

Many pest management professionals will suggest dissolvable laundry bags that seal. You then place the bagged laundry into the washer, and the hot water will dissolve the bag.

You can find dissolvable laundry bags online.

Don’t take items from one room where you know bedbugs are to another room. Just take them straight to the trash.

Most of the time, bedbug bites will go away on their own. If you have a more severe reaction to them, you may wish to apply topical steroids or take an oral antihistamine.

An article in The Journal for Nurse Practitioners recommends using the acronym SLEEP to prevent bedbugs from coming to your home after traveling:

S is for survey. When traveling, look for any signs of potential bedbugs, such as rust-colored spots on sheets, bed skirts, or mattress tags.
L is for lift. Look at bedding, the bed frame, and furniture for any signs of bedbugs.
E is for elevate. Place luggage and other personal items on luggage racks away from beds.
E is for examine. Look at luggage and clothing items before returning home.
P is for place. Place all clothing in a dryer on high heat for at least 15 minutes after getting home.

Bedbugs can also hitchhike onto many items you could bring into your home. This includes used furniture and clothing. Before you bring these items into your home, do a thorough inspection.

Bedbugs are a nuisance best treated as quickly as possible once you identify them.

Often, you must use several methods to ensure they’re completely gone from your home. Once they are, use careful methods when traveling to ensure you don’t bring them back.

Last medically reviewed on September 24, 2019

How we reviewed this article:

Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

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Doggett SL, et al. (2012). Bed bugs: Clinical relevance and control options. DOI:
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Are Bedbugs Big Enough to See