Nasal vestibulitis itself is not directly contagious, but the bacteria that cause it can spread from person to person. The infection develops inside the nostrils when Staphylococcus aureus, a common skin bacterium, invades irritated or broken skin in the nasal vestibule (the area just inside each nostril where hair grows). Whether you pass the bacteria to someone else and whether they actually develop an infection are two different things.
Why the Bacteria Spread but the Infection Usually Doesn’t
Staphylococcus aureus spreads through physical contact and airborne droplets. You can transfer it by touching your nose and then touching another person, sharing towels, or close face-to-face contact. In that sense, the underlying cause of nasal vestibulitis is transmissible.
Here’s the important context: roughly 30% of healthy people already carry S. aureus on their skin or in their nose without any symptoms at all. Between 10% and 20% of the population has the bacterium permanently living in their nasal passages, and another 30% to 50% carry it intermittently. Most of these people never develop nasal vestibulitis or any infection from it. The bacterium only causes trouble when it gets past the skin’s defenses, typically through a small wound or crack inside the nostril.
So while you could theoretically pass the bacteria to someone else, the odds of that person developing vestibulitis from the encounter are low. They’d also need a break in the skin lining of their nose for the bacteria to take hold.
What Actually Triggers the Infection
Nasal vestibulitis usually starts with some kind of minor damage to the skin inside the nose. The most common triggers are nose picking, plucking or trimming nasal hairs too aggressively, frequent nose blowing during a cold, and piercings. Once the skin barrier is broken, S. aureus (which may already be living in the nose) moves into the damaged tissue and causes infection.
People with weakened immune systems or conditions like diabetes face a higher risk because their bodies are slower to fight off bacterial invasion. But for most people, the infection traces back to a specific mechanical irritation rather than catching it from someone else.
What Nasal Vestibulitis Feels and Looks Like
The infection produces small, tender bumps or sores just inside the nostril, often centered around hair follicles. You’ll typically notice redness, swelling, and pain at the front of the nose. The area may crust over, and touching or bumping your nose can be surprisingly painful. In more advanced cases, a boil (furuncle) can form, which is a deeper, more painful lump filled with pus.
The condition is different from a pimple on the outside of the nose. It sits inside the nostril where the skin transitions from the outer facial skin to the mucous membrane deeper in the nasal passage.
How It’s Treated
Because S. aureus is almost always the culprit, topical antibiotics are the first line of treatment and tend to work well. A topical antibiotic ointment applied inside the nostril twice daily for five consecutive days eliminates the bacteria in about 91% of cases immediately after treatment. Four weeks later, clearance rates still hold at around 87%, though the bacteria can gradually recolonize over the following months in some people.
For mild cases, warm compresses and keeping the area clean may be enough to help the infection resolve on its own. If a boil forms or the infection doesn’t respond to topical treatment, oral antibiotics or drainage of the abscess may be necessary. Most cases clear up within one to two weeks with appropriate treatment.
When the Infection Gets Serious
Nasal vestibulitis is usually minor and resolves without complications. In rare cases, though, an untreated or severe infection in this area can become dangerous because of the nose’s blood supply. The veins draining the nose connect to a network of veins inside the skull that have no valves, meaning infected material can travel backward toward the brain.
The most serious complication is cavernous sinus thrombosis, a blood clot in a large vein at the base of the brain triggered by spreading infection. Warning signs include high fever, severe headache, swelling around the eyes, vision changes, confusion, stiff neck, or facial numbness. This complication is extremely rare but requires emergency treatment. If a simple nasal sore starts producing any of these symptoms, that’s a sign the infection has moved beyond the nostril.
Reducing the Risk of Spread
If you have an active nasal vestibulitis infection, a few practical steps minimize the chance of spreading bacteria to others or reinfecting yourself:
- Wash your hands after touching your nose, especially before contact with other people.
- Don’t share towels, pillowcases, or tissues while the infection is active.
- Avoid picking or touching the inside of your nose, which can push bacteria deeper or transfer it to your fingers.
- Replace or wash anything that contacts your nose regularly, including cloth handkerchiefs and pillowcases.
These precautions matter most in households with young children, elderly family members, or anyone with a compromised immune system, since these groups are more vulnerable to S. aureus infections of all kinds.