Warts are caused by human papillomavirus (HPV) entering the skin through tiny breaks you often can’t see, so prevention comes down to two things: protecting your skin barrier and limiting contact with the virus. They’re extremely common, especially in children, with one large study of primary schoolchildren finding an incidence of 29 new cases per 100 children per year. The good news is that most warts are preventable with straightforward habits.
How HPV Gets Into Your Skin
Understanding the mechanism helps the prevention tips make more sense. HPV doesn’t penetrate intact skin. It needs a disruption, even a microscopic one, to reach the basal layer of your epidermis, which is where it takes hold. The virus first attaches to proteins on the basement membrane of the damaged area, then transfers to skin cells and gets pulled inside them. From there, it hijacks those cells to replicate, eventually producing the thickened, rough growth you recognize as a wart.
This is why warts tend to show up in places that get the most wear and tear: hands, fingers, feet, knees, and around the nails. Any activity that creates small cuts, scrapes, or softened skin gives the virus an entry point.
Keep Skin Intact and Dry
Since HPV exploits breaks in the skin, your most effective defense is maintaining a strong skin barrier. That means moisturizing dry, cracked hands (especially in winter), treating hangnails rather than tearing them, and keeping feet dry. Damp, softened skin is more vulnerable because moisture weakens the outer layer and makes micro-tears more likely.
If your feet sweat heavily, change your socks during the day and choose moisture-wicking materials. Letting shoes air out between wears also helps. For plantar warts specifically, keeping feet dry is one of the most practical things you can do.
Stop Nail Biting and Cuticle Picking
Biting your nails or chewing your cuticles creates tears in the skin that are too small to notice but large enough for HPV to slip through. This is one of the most direct risk factors for warts around the fingernails, which are notoriously stubborn to treat once established. If you’re a habitual nail biter, breaking this one habit meaningfully reduces your exposure.
Don’t Share Personal Items
HPV can survive on surfaces, which is why shared items are a common route of transmission. Everyone in your household should have their own towels, washcloths, razors, nail clippers, and socks. This matters most when someone in the home already has a wart, but it’s a good baseline habit regardless. Razors deserve special attention because they create micro-cuts with every stroke, essentially opening the door for the virus while simultaneously being a surface it can live on.
Protect Your Feet in Public Spaces
Locker rooms, public showers, and pool decks are prime territory for plantar warts. The floors are warm, wet, and walked on by hundreds of bare feet. Wearing sandals or flip-flops in these areas is one of the simplest and most effective prevention steps. This applies to kids as well as adults: children who swim or play sports in facilities with shared changing areas should get in the habit of wearing footwear any time they’re not in the water.
If You Already Have a Wart
Preventing new warts when you already have one is just as important as avoiding the first one. The virus can spread from one part of your body to another through a process called autoinoculation, which essentially means you reinfect yourself by touching the wart and then touching another area with broken skin.
To limit this spread:
- Cover the wart with a bandage, especially during activities where it might get bumped or rubbed.
- Don’t pick, scratch, or cut it. This releases viral particles and creates new skin breaks nearby.
- Wash your hands immediately after touching the wart, including after applying any treatment.
- Avoid shaving over it. A razor dragged across a wart can spread the virus along the entire shaved area. This is a common reason people develop clusters of flat warts on the face or legs.
Children with warts can still attend school and participate in all activities, including sports. For contact sports, covering the wart with a bandage is enough to prevent spreading it to teammates.
Does the HPV Vaccine Prevent Common Warts?
This is a reasonable question, but the short answer is no. The HPV vaccines currently available target the strains responsible for genital warts and cervical cancer (types 6, 11, 16, and 18, among others). Common warts on the hands and feet are caused by different strains entirely, primarily types 1, 2, 4, 27, and 57. A study published in the Indian Journal of Dermatology found no significant relationship between HPV vaccination status and resolution of common warts. There is currently no vaccine that prevents the strains behind everyday skin warts.
Why Children Get Warts More Often
Kids are disproportionately affected for several overlapping reasons. Their immune systems haven’t yet encountered HPV, so they lack the antibody response that helps many adults fight off the virus before it takes hold. They’re also more likely to have skin breaks from playground scrapes, nail biting, and rough play. And they spend more time in shared environments like schools, pools, and gyms where the virus circulates freely. One prospective study of Dutch schoolchildren aged 4 to 12 found that nearly a third developed new warts over the course of a single school year.
For parents, the most practical steps are teaching kids not to pick at warts (their own or a friend’s), making sure they wear sandals in locker rooms, and keeping any existing warts covered during sports. These habits don’t need to be perfect to make a real difference in transmission rates.