Warts: What Clears Them and What Does Not

Warts are common, harmless in most people, and annoying in almost everyone. They snag on socks, hurt on the bottom of your foot, and seem to come back right when you think they are gone. If you have one, you probably want to know two things: will it go away on its own, and what actually helps if it does not?

Here is what we tell patients. Most warts clear without treatment, but it can take months or years. When you do treat them, the evidence favors simple, low-cost options. Many pricier or more aggressive choices have not been shown to work better.

What warts are

Warts are skin growths caused by human papillomavirus (HPV). There are more than 100 types, and the ones that cause common warts on hands and feet are different from the types linked to genital warts. The virus likely enters through tiny breaks in the skin. Communal showers, handling raw meat, and a weakened immune system raise your risk. A summary of the evidence is available from BMJ Clinical Evidence.

In people with healthy immune systems, warts are harmless and usually go away as the body builds an immune response. That can take months or years. So waiting is a real option, especially for a wart that does not bother you.

When to treat and when to wait

Treatment makes sense if a wart hurts, spreads, bleeds, or keeps catching on things. It also makes sense if it bothers you every day. Plantar warts on the bottom of the foot are a common reason, because walking puts pressure on them.

Waiting makes sense for a single small wart that does not hurt, especially in a child. We would rather you skip a painful treatment than do it for a wart that was going to leave anyway.

What the evidence says works

A large Cochrane review pulled together 85 trials with about 8,800 people. It found that salicylic acid, an over-the-counter peel-off treatment, helped warts clear more often than placebo. The effect was modest. It looked stronger on hands than on feet. You can read the Cochrane review on PubMed.

Cryotherapy, which means freezing the wart with liquid nitrogen, is what many people expect at a clinic. Here the evidence is less tidy:

• In the Cochrane review, cryotherapy was not clearly better than placebo across all sites.
• It was not clearly better than salicylic acid either.
• Freezing more aggressively worked better than a gentle freeze, but caused more side effects such as pain and blistering.
• Using salicylic acid and cryotherapy together looked better than salicylic acid alone in two trials.

A UK trial of 240 people with plantar warts compared a clinic-delivered freeze with daily 50% salicylic acid at home. Clearance rates were similar at 12 weeks and at 6 months. Cryotherapy cost more. The full report is in Health Technology Assessment, and a separate cost analysis reached the same conclusion about value.

A later review of larger studies on plantar warts reached a similar view. Salicylic acid and cryotherapy remain the main treatments, and no clearly better option has emerged in decades. That review is on PubMed.

What about duct tape and home remedies

Duct tape is a popular home fix. The Cochrane review looked at two trials of clear duct tape with 193 participants and found no advantage over placebo. It is harmless for most people, but we would not expect it to do much.

We would also be cautious with other home remedies. Cutting, burning, or picking at a wart can cause scarring and can spread the virus to nearby skin. If you try something at home, stick with a product made for warts and follow the label.

How to use salicylic acid well

Salicylic acid works slowly, and most people stop too soon. A simple routine looks like this:

1. Soak the wart in warm water for a few minutes.

2. Gently file away the dead surface skin with a disposable emery board or pumice stone. Do not share it, and throw it out after.

3. Apply the product as directed, usually once a day.

4. Keep it off healthy skin. Petroleum jelly around the edge can help.

5. Repeat daily for several weeks before deciding it is not working.

Stop and call us if the skin becomes very red, raw, or painful. Use extra care if you have diabetes or reduced feeling in your feet, because small skin injuries can turn into bigger problems.

When a wart needs a closer look

Not every rough bump is a wart. A growth that bleeds without cause, changes color or shape, or does not respond to treatment should be looked at. So should any lesion that is new in an older adult or in someone with a weakened immune system. Warts that spread quickly, or that are widespread, deserve a conversation about your overall health.

We can often assess a skin growth over video and photos during a telehealth visit. If we think it needs freezing, a biopsy, or other hands-on care, we will tell you and help you get it with a local clinician.

Your next step

If a wart is painful, spreading, or not responding to treatment, we can help you sort out the next move. Our medical dermatology team treats skin conditions by telehealth, by appointment. Learn more at /conditions/dermatology. Most major plans are accepted, including Medicare.