Bed bugs do not live on human bodies the way lice or scabies mites do. They feed for a few minutes, usually while you sleep, then retreat to cracks in furniture, mattress seams, and other hiding spots nearby. So the goal is not really to remove an infestation from your skin but to clean up after exposure, calm the bite reactions, and make sure you are not carrying bugs or eggs into new spaces on your clothes and belongings. The itch, meanwhile, is your immune system reacting to proteins in the bug’s saliva, and it responds well to straightforward treatments you can start right away.
Why Bed Bugs Are Not “On” You
This is the single most important thing to understand, because it changes how you respond. Bed bugs are not body parasites. They are nest parasites. Their biology is built around hiding in dark crevices close to where a host sleeps, emerging to feed for roughly five to ten minutes, then retreating. They do not burrow into skin, they do not lay eggs in hair, and they do not cling to you during the day the way ticks do. If you have woken up with bites, the bugs are almost certainly in or near the bed, not on your person.
That said, bed bugs and their eggs can hitch a ride on clothing, bags, shoes, and other belongings. This is how infestations spread between locations. When people feel like bed bugs are “on them,” what is usually happening is one of two things: either a bug has crawled onto clothing or a bag and is being transported unknowingly, or the persistent itching and anxiety of an infestation create a crawling sensation on the skin even when no bugs are present. Both are worth addressing, but they call for different responses.
Cleaning Up After Exposure
If you have just left a place where bed bugs were present, or you have discovered bites and suspect your own home is infested, the first practical step is a hot shower. Soap and water will wash away any bug that happens to be on your skin, though again, finding one actually on you is uncommon. The shower also gives you a chance to inspect your body for bites you may not have noticed.
Strip off the clothes you were wearing and put them directly into a plastic bag to isolate them. Do not toss them into a shared hamper or onto your bed. Wash them on the hottest setting your fabric allows, and then run them through the dryer on high heat. Research on thermal kill thresholds for bed bugs found that adult bugs die when exposed to temperatures around 48°C (about 119°F), while eggs require higher heat, around 55°C (131°F).1MDPI / Insects. Temperature and Time Requirements for Controlling Bed Bugs (Cimex lectularius) under Commercial Heat Treatment Conditions A standard household dryer on its high setting typically exceeds both of those thresholds, so running clothes through a full drying cycle is one of the most reliable do-it-yourself decontamination methods available.
Items that cannot go in a dryer, like shoes or a structured bag, can be sealed in a black plastic bag and left in direct sunlight on a hot day, though this is far less reliable than a dryer because the interior temperature depends on ambient conditions. For luggage specifically, research has explored brief exterior heat treatments as a way to kill bed bugs hitching a ride on bag surfaces, and the results suggest it is a promising approach for reducing spread.2PubMed. Rapid killing of bed bugs (Cimex lectularius L.) on surfaces using heat: application to luggage Portable heat chambers designed for this purpose exist, though most people do not own one. A more accessible option is to carefully vacuum the exterior of bags and immediately dispose of the vacuum bag or empty the canister into a sealed trash bag outside.
How to Stop the Itching
Bed bug bites itch because your immune system mounts a response to salivary proteins the bug injects during feeding. These proteins include anticoagulants and anesthetics that help the bug feed undetected, but your body recognizes them as foreign and releases histamine. The result is the familiar red, swollen, intensely itchy welt.
The good news is that most bed bug bite reactions are mild and respond to basic over-the-counter treatments. Here is what tends to work:
- Cold compresses: A cloth-wrapped ice pack or a cool, damp washcloth held against the bites for ten to fifteen minutes reduces swelling and temporarily numbs the itch. This is a good first move while you figure out next steps.
- Oral antihistamines: Diphenhydramine (Benadryl) or cetirizine (Zyrtec) can reduce the histamine-driven itch from the inside. Diphenhydramine causes drowsiness, which can actually be helpful at night if the itching is keeping you awake. Cetirizine is less sedating if you need to function during the day.
- Topical hydrocortisone cream: A 1% hydrocortisone cream, available without a prescription, dials down inflammation at the bite site. Apply a thin layer to individual bites a couple of times a day. It is not meant for large areas of skin or prolonged use.
- Calamine lotion: Old-fashioned but effective for surface-level itch relief. It cools the skin and forms a mild protective layer.
- Avoid scratching: This is easier said than done, but broken skin from scratching is the main route to secondary bacterial infection, which is the most common medical complication of bed bug bites. Keep nails trimmed short, and consider covering bites with a small adhesive bandage at night if you scratch in your sleep.
For most people, bites resolve on their own within one to two weeks. The itching peaks in the first few days and gradually fades. If you are being bitten repeatedly because an infestation is ongoing, new bites will keep appearing, which makes it feel like the itching never stops. The only real cure in that scenario is eliminating the infestation itself.
When Bite Reactions Are Severe
A small number of people develop exaggerated reactions to bed bug bites that go well beyond ordinary itching. The most dramatic are bullous reactions, where bites produce large fluid-filled blisters rather than simple red bumps. Research into one such case found that the blistering was driven by an IgE-mediated allergic response to a specific protein in bed bug saliva called nitrophorin, which functions as a nitric oxide carrier the bug uses to keep blood flowing during a meal.3Nature / Journal of Investigative Dermatology. Bullous allergic hypersensitivity to bed bug bites mediated by IgE against salivary nitrophorin In plain terms, the patient’s immune system had become sensitized to this saliva protein over repeated exposures, and each new bite triggered a progressively stronger allergic reaction.
If you develop blisters, widespread hives, difficulty breathing, or significant swelling beyond the bite sites, see a doctor. These reactions sometimes require prescription-strength corticosteroids or, in rare cases of anaphylaxis-like symptoms, emergency treatment. Even without dramatic blistering, if ordinary over-the-counter remedies are not controlling your symptoms after several days, a healthcare provider can prescribe stronger topical steroids or evaluate whether something else is going on.
It is also worth knowing that some people do not react to bed bug bites at all, especially during a first exposure. The immune response that causes itching and welts takes time to develop. A person can be bitten repeatedly for weeks before showing any visible signs. This is one reason infestations sometimes grow large before anyone notices.
Do Bed Bugs Spread Diseases?
Given that bed bugs feed on human blood, one of the most common and understandable fears is that they transmit infections. The reassuring answer is that despite decades of investigation, no study has established that bed bugs spread diseases to humans in real-world conditions. A systematic review of the evidence found no published study demonstrating a causal link between bed bugs and infectious disease transmission in people.4PubMed Central. Bed bugs and possible transmission of human pathogens: a systematic review A separate review reached the same conclusion, noting that while bed bugs are suspected of being capable of carrying pathogens, they have never been confirmed as disease vectors.5PubMed Central. Bedbugs and infectious diseases
A global survey of viruses found in bed bug populations reinforced this picture, finding that bed bugs have never been linked to pathogen transmission in a natural setting.6Virus Research. Do bed bugs transmit human viruses, or do humans spread bed bugs and their viruses? A worldwide survey of the bed bug RNA virosphere Laboratory experiments have shown that certain pathogens can survive inside a bed bug for a time, but surviving inside a bug and being transmitted to a new human host through a bite are very different things. Bed bugs do not appear to be efficient at the second part.
The main health risk from bed bug bites remains secondary infection from scratching, allergic reactions in sensitized individuals, and the significant psychological burden of living with an infestation.
The Psychological Side of Bed Bug Exposure
The mental toll of bed bugs deserves its own discussion because it is frequently underestimated, even by people going through it. Research has documented that some individuals develop symptoms after bed bug encounters that resemble post-traumatic stress, including nightmares, flashbacks, hypervigilance, insomnia, anxiety, avoidance behaviors, and personal dysfunction.7The American Journal of Medicine. Psychological Effects of Bed Bug Attacks These are not personality quirks or overreactions. Bed bug infestations violate your sense of safety in your own bed, and the bugs’ nocturnal feeding cycle means the anxiety peaks exactly when you need to relax and sleep.
The crawling sensations people report, often called formication, can persist long after an infestation has been resolved. You might feel phantom itching or a tickle on your skin and immediately assume bugs are back, even if a careful inspection turns up nothing. This is a normal stress response, but it can become a cycle: the sensation triggers anxiety, the anxiety heightens skin sensitivity, and the heightened sensitivity produces more phantom sensations.
If you find yourself unable to sleep, compulsively checking your bed multiple times a night, or avoiding travel and social situations out of fear of re-exposure, it is worth talking to a mental health professional. These are treatable responses, and acknowledging them is not a sign of weakness. Bed bug-related anxiety is common enough that pest control professionals encounter it regularly.
Preventing Bites While an Infestation Is Being Treated
Professional extermination of a bed bug infestation typically takes multiple treatments over several weeks. During that window, you are still sleeping in a space that has bugs, and that means continued exposure. There are a few things you can do to reduce bites while treatment is underway.
Encasements for your mattress and box spring are one of the most effective measures. These are zippered covers made of tightly woven fabric that trap any bugs already inside and prevent new ones from entering or exiting. They do not kill the bugs immediately; trapped insects eventually die because they cannot feed. What the encasements do right away is eliminate the mattress as a hiding spot and make the bed easier to inspect.
Interceptor traps placed under each bed leg can catch bugs climbing up from the floor. These are simple plastic dishes with a slippery inner wall that bugs cannot climb out of. They serve double duty as monitoring tools, because checking them regularly tells you whether the population is declining after treatment.
Pulling your bed a few inches away from the wall and making sure bedding does not drape to the floor removes two common routes bugs use to reach you. This is not foolproof, since bed bugs can travel across ceilings and drop, but it makes access harder and forces more bugs through the interceptor traps.
Avoid the temptation to move to a different room or start sleeping on the couch. Bed bugs follow carbon dioxide and body heat. If you relocate, you risk drawing the infestation into new areas of your home, which makes professional treatment harder and more expensive.
What Does Not Work
The internet is full of bed bug remedies that range from ineffective to dangerous. A few deserve specific mention because they are so frequently recommended.
Bug bombs and total-release foggers are a poor choice. The active ingredients in most consumer foggers do not penetrate the crevices where bed bugs hide, and the repellent effect can actually scatter bugs deeper into walls and adjacent rooms, making the infestation harder to treat. Multiple studies have shown low efficacy for foggers against bed bugs specifically.
Essential oils like tea tree oil, lavender, and peppermint are widely marketed as bed bug repellents. While some have mild insecticidal properties in laboratory settings at high concentrations, the concentrations you can safely apply to skin or bedding are far too low to kill or meaningfully repel bed bugs. They may make you feel better, but they will not protect you from bites.
Rubbing alcohol sprayed directly on bugs can kill them on contact, but it evaporates quickly and has no residual effect. It also introduces a serious fire hazard. There have been documented cases of house fires caused by people spraying large amounts of rubbing alcohol on mattresses and furniture in an attempt to kill bed bugs.
Diatomaceous earth is sometimes effective as a supplementary measure. The fine powder damages the bugs’ waxy outer coating and causes them to dehydrate. However, it works slowly, taking days to weeks, and only kills bugs that walk through it. It is not a standalone solution. If you use it, choose food-grade diatomaceous earth and apply it in thin layers in cracks and crevices. Do not spread it thickly over large surfaces, as the dust can irritate your lungs.
Checking Yourself After Travel
Hotels, hostels, and short-term rentals are common places to pick up bed bugs, and a quick routine when you travel can significantly reduce your risk of bringing them home. Before settling into a hotel room, pull back the sheets and inspect the mattress seams and corners for small dark spots (fecal stains), shed skins, or the bugs themselves, which are about the size and color of an apple seed when fully grown.
Keep your luggage on a hard surface like a luggage rack or in the bathroom rather than on the bed or carpeted floor. When you get home, unpack directly into the washing machine rather than onto your bed or closet floor. Run everything through a hot dryer cycle, including items that did not get visibly dirty. The heat is what matters more than the washing, since bed bugs and their eggs are killed by sustained high temperatures, not by soap or water.1MDPI / Insects. Temperature and Time Requirements for Controlling Bed Bugs (Cimex lectularius) under Commercial Heat Treatment Conditions Wipe down the exterior of hard-sided luggage with a damp cloth, and vacuum soft-sided bags thoroughly before storing them.
If you are someone who travels frequently for work and stays in a wide range of accommodations, consider keeping a dedicated set of luggage liners and running them through the dryer after every trip as a matter of habit. The upfront effort is minimal compared to dealing with an infestation at home.