Should You Pick Your Nose? The Health Risks Explained

Nose picking carries real health risks, from seeding your nostrils with harmful bacteria to causing nosebleeds and, in extreme cases, opening a route for infection deep into the skull. Nearly everyone does it, and most people get away with it most of the time, which is precisely why the risks tend to be dismissed. But the evidence for those risks is solid enough that ear, nose, and throat specialists routinely wish people would stop.

Almost Everyone Does It

Before getting into why you should quit, it helps to know you are in overwhelming company. A survey of adults published in the Journal of Clinical Psychiatry found that 91 percent were current nose pickers, even though only about three-quarters believed “almost everyone does it.”¹ A follow-up survey of adolescents put the median frequency at four times a day, with roughly 8 percent of the sample reporting they did it more than 20 times daily.² In other words, this is one of the most universal human habits, and most people feel a little sheepish about it. The question is whether that sheepishness is warranted by anything beyond social taboo.

Your Nose Already Has a Cleaning System

The inside of your nose and airways is lined with a layer of mucus and tiny hair-like structures called cilia. Together, they form a self-cleaning conveyor belt. Mucus traps inhaled particles, dust, bacteria, and viruses, while the cilia beat in coordinated waves to push that loaded mucus toward the throat, where you swallow it harmlessly.³ The mucus itself is remarkably well suited to this job. Its sugar-coated protein chains can bind to virtually all particles that land on airway surfaces, creating a kind of biological flypaper with extraordinary variety.⁴

This system is your primary innate defense against airborne threats. When it is working well, the dried or semi-dried mucus you feel near the front of your nostrils is essentially the end product of a successful cleanup. Your body moves it forward on purpose. The urge to remove it manually is understandable, but the system does not actually require your finger to finish the job. A gentle blow into a tissue accomplishes the same thing without the downsides.

Bacteria Love a Picked Nose

The most well-documented risk of nose picking is bacterial. Your fingernails harbor bacteria, and shoving them into your nostrils gives those organisms a warm, moist environment to colonize. The best-studied connection involves Staphylococcus aureus, a bacterium that normally lives on skin but can cause serious infections when it gets into wounds or deeper tissues. A study published in Infection Control & Hospital Epidemiology compared nose pickers with non-pickers and found that pickers were about 50 percent more likely to carry S. aureus in their noses. Among healthy volunteers, the more frequently someone picked, the more S. aureus was found.⁵

That matters because nasal carriage of S. aureus is a known risk factor for spreading the bacterium to other parts of the body and to other people. Healthcare workers who carry it in their noses can transmit it to patients. People who carry it are at higher risk for skin and soft-tissue infections. And when the strain involved is methicillin-resistant (MRSA), the stakes go up further. A study of health-science students found that nose-picking habit was significantly associated with MRSA carriage.⁶ This is not a minor concern in healthcare settings, where antibiotic-resistant infections are among the leading patient-safety threats.

Respiratory Infections and the Hands-to-Nose Route

The bacterial story extends to viruses as well. During the COVID-19 pandemic, a cohort study of hospital healthcare workers examined whether nose picking was associated with SARS-CoV-2 infection. Workers who picked their noses had a COVID-19 rate roughly three times higher than those who did not, even after adjusting for how much direct exposure to COVID patients they had.⁷ The finding makes intuitive sense. Respiratory viruses often enter the body through the mucous membranes of the nose and eyes. Touching contaminated surfaces and then touching your face is a well-known transmission route. Nose picking is, in effect, a maximally efficient way to deliver whatever is on your hands directly to the tissue most vulnerable to infection.

This does not mean that every cold or flu you have ever caught came from picking your nose. But it does mean that if you are trying to avoid respiratory illness, especially during outbreaks or in clinical settings, keeping your fingers out of your nostrils is one of the simplest protective steps you can take.

Nosebleeds and Physical Damage

The interior of the nose is delicate. Just inside the nostril, on the nasal septum (the wall dividing the two sides), is a dense network of tiny blood vessels. Fingernails can easily scratch or tear these vessels, triggering nosebleeds. For most people, an occasional nosebleed is a nuisance and nothing more. But for children, who tend to pick more aggressively and more often, recurrent nosebleeds can become a persistent problem. A randomized controlled study of childhood nosebleeds found that digital trauma from picking and rubbing frequently leads to epistaxis, particularly in children who also have allergic rhinitis, where itching and irritation drive the urge to pick.⁸

More serious than nosebleeds is the risk of nasal septal perforation, which is a hole in the cartilage wall between the two nostrils. Chronic, aggressive picking can erode the tissue over time. The medical literature distinguishes between casual nose picking and rhinotillexomania, a compulsive form that can lead to genuine self-injury, including perforation.⁹ Septal perforation can cause whistling when you breathe, chronic crusting, and difficulty breathing through the nose. Surgical repair is possible but not always successful and not particularly pleasant.

Rare but Serious Complications

The anatomy of the nose puts it uncomfortably close to structures you really do not want infected. Veins in the nose and face drain into a network that connects, without valves, to the cavernous sinus, a large venous space sitting right next to the brain. When nasal infections spread through this pathway, the result can be cavernous sinus thrombosis, a blood clot in that space that causes severe headache, bulging eyes, paralysis of eye movement, and fever. A case series from a teaching hospital documented eight pediatric cases of cavernous sinus thrombosis originating from nasal infections.¹⁰ This is genuinely life-threatening and requires emergency treatment with antibiotics and anticoagulants.

To be clear, this complication is rare. It requires an untreated nasal infection to spread aggressively inward, and that usually involves significant tissue damage or immune compromise. But the mechanism is real, and nose picking creates the initial break in the skin that gives bacteria their opening. Doctors sometimes refer to the triangle of the face between the bridge of the nose and the corners of the mouth as the “danger triangle” for exactly this reason: infections in this zone have a direct venous highway to the brain.

The Olfactory Pathway and Brain Pathogens

Beyond the venous route, there is a more direct anatomical connection between the nose and the brain: the olfactory nerves. These nerve fibers pass through tiny holes in the bone at the top of the nasal cavity (the cribriform plate) and connect to the olfactory bulb on the underside of the brain. Certain pathogens can exploit this pathway. Research on Burkholderia pseudomallei, a soil bacterium that causes melioidosis, demonstrated in animal models that the organism can destroy the olfactory lining of the nose and then travel along the now-exposed nerve fibers, passing through the cribriform plate into the brain within 24 hours.¹¹

This has led researchers to ask broader questions. A 2023 review in Biomolecules explored the idea that nose picking could theoretically introduce soil- or feces-borne pathogens to the olfactory mucosa via contaminated hands, providing a potential route for organisms to trigger neuroinflammation.¹² The hypothesis is speculative and far from proven, but the underlying anatomy is not in dispute. The nose really does offer a shortcut past the blood-brain barrier, and damaging its lining makes that shortcut more accessible. Whether this matters for common, everyday nose picking or only for severe mucosal damage remains an open question.

When Nose Picking Becomes Compulsive

For most people, nose picking is a habit: something done absentmindedly a few times a day, usually in private. The adult survey that found 91 percent prevalence also concluded that nose picking should not be considered pathological for most people.¹³ But for a small subset, it crosses into compulsive territory. Rhinotillexomania describes a pattern where the picking is repetitive, difficult to stop, and causes noticeable harm, such as chronic nosebleeds, tissue damage, or social impairment. In the adolescent survey, almost 17 percent of respondents felt they had a “serious nose-picking problem.”²

Compulsive nose picking falls into the broader category of body-focused repetitive behaviors, alongside skin picking, hair pulling, and nail biting. For people with developmental or intellectual disabilities, these behaviors can be especially persistent and harder to redirect. Habit reversal therapy, a form of cognitive-behavioral treatment, has shown promise in reducing body-focused repetitive behaviors, though results vary depending on the specific behavior and the individual.¹⁴ If you find yourself picking to the point of pain, bleeding, or visible damage, it is worth mentioning to a doctor, not because nose picking itself is shameful but because compulsive variants respond to treatment and can prevent real tissue harm.

How to Reduce the Urge

The main reason people pick their nose is discomfort: dried mucus, crusting, or a sensation of blockage. Addressing the underlying dryness can remove the trigger. Saline nasal sprays are the simplest option and are effective at relieving dry nose symptoms. A randomized trial compared isotonic saline spray with hyaluronic acid-based sprays and found that all three treatments significantly improved symptoms of nasal dryness, crusting, and obstruction.¹⁵ Plain saline worked just as well as the fancier formulations, so the cheapest option at the drugstore is a reasonable first step.

Other practical measures are straightforward:

Humidify indoor air: Dry air, particularly from heating systems in winter, dries out nasal passages and accelerates crust formation. A simple humidifier in the bedroom can help.
Blow gently: A tissue handles what your finger is going after, without the scratching, bacterial seeding, or tissue damage.
Trim fingernails: If you cannot stop entirely, shorter nails cause less mechanical damage to the nasal lining.
Treat allergies: Allergic rhinitis causes itching and increased mucus production, which drives the urge to rub and pick, especially in children.

None of these approaches require medical intervention. They just redirect a nearly universal urge toward less damaging alternatives.

Workplace Exposures That Make It Worse

Certain occupational environments create conditions that make nasal irritation, and the resulting urge to pick, worse. Workers exposed to airborne dust of various kinds develop higher rates of nasal crusting and blockage. A study of workers exposed to soft paper dust found increased prevalence of nasal blockage and crust formation compared to unexposed controls.¹⁶ Similarly, bakers exposed to flour dust reported nasal symptoms at much higher rates than non-exposed workers; ten out of twelve bakers in one study had at least one nasal symptom such as crusting, blockage, or runny nose.¹⁷

If you work in a dusty environment and find yourself picking your nose frequently, the problem may not be the habit itself but the conditions driving it. Proper dust control, respiratory protection, and end-of-shift nasal irrigation can reduce the irritation that leads to picking. This is also a setting where the bacterial risks of picking are compounded: hands that have been handling industrial materials carry a wider variety of contaminants than clean hands at a desk job.

Children and Nose Picking

Kids pick their noses constantly and with admirable commitment. Beyond the nosebleeds and infection risks that apply to adults, children face one additional concern: nasal foreign bodies. Young children sometimes push objects into their noses during exploratory play, and the same dexterity-without-judgment combination that drives nose picking can lead to beads, small toys, food items, or other objects becoming lodged in the nasal cavity. The peak age for nasal foreign bodies is between two and five years, with a slight male predominance, and the objects most often get stuck just deep enough that they cannot be removed without medical help.¹⁸ A forgotten nasal foreign body can cause one-sided nasal discharge, foul odor, and infection if it stays in place for days.

For parents, the practical takeaway is less about forbidding nose picking (good luck) and more about managing its consequences. Keeping small objects out of reach during the peak foreign-body years, treating any underlying allergy-driven itching, and teaching nose-blowing as soon as the child is coordinated enough to learn it all help more than repeated scolding. Kids eventually grow out of the most aggressive public nose picking on their own, mostly because social pressure becomes a more powerful motivator than parental instruction ever was.