How can I tell a plantar wart from a corn?

A plantar wart has a rough surface with tiny black dots and interrupts the natural skin lines on your sole, and it often hurts when pinched from the sides. A corn is smooth, thickened skin caused by pressure, with the skin lines running over it, and it hurts on direct pressure.

Are plantar warts contagious?

Yes. They are caused by HPV and can spread to other parts of your foot or to other people through direct contact or shared wet surfaces like pool decks and gym showers. Keeping the wart covered, wearing slippers in communal areas and not sharing towels help limit spread.

Will a plantar wart go away on its own?

Often, yes. Many plantar warts clear by themselves as the immune system tackles the virus, though this can take months or longer. Treatment is worthwhile if the wart is painful, spreading or persistent, or if you simply want it gone sooner.

Why do plantar warts keep coming back?

Warts can recur because the HPV virus may linger in the surrounding skin even after the visible wart is treated. Stubborn or recurring warts are common, which is why several treatment sessions are sometimes needed and why a dermatologist may be helpful.

Should I see a doctor if I have diabetes and a plantar wart?

Yes. If you have diabetes, poor circulation or reduced sensation in your feet, you should not self-treat foot lesions, including warts. Small foot problems can develop into serious wounds, so have any foot growth assessed by a doctor.

Plantar Warts in Singapore: Causes & Treatment

Written & reviewed by the BestDoctors.sg editorial team · Last updated 2 Jul 2026 · General information, not medical advice

Quick answer. Plantar warts are rough, viral growths on the soles of the feet caused by HPV, and they can be painful when you walk. They are harmless but contagious, often picked up on shared wet floors, and several effective treatments are available.

A plantar wart is a wart that grows on the sole of the foot. Because you walk on it, the wart is pushed inward and can feel like a small stone under the skin, sometimes becoming surprisingly painful. They are caused by the human papillomavirus (HPV) and are very common, especially in people who use shared changing rooms, swimming pools and gym floors – all familiar settings in Singapore.

Plantar warts are harmless and often clear on their own over time, but they can be stubborn, uncomfortable and contagious. They are also easy to confuse with corns and calluses. This guide explains how to recognise a plantar wart, why they happen, the treatments available, and when it is worth seeing a doctor or dermatologist.

At a glance

Telling a plantar wart apart from a corn or callus
Feature	Plantar wart	Corn or callus
Cause	HPV virus infection	Friction and pressure
Appearance	Rough surface, tiny black dots	Smooth, thickened yellowish skin
Skin lines	Interrupt the skin lines	Skin lines run over the top
Pain	Often tender when pinched sideways	Tender on direct pressure
Contagious	Yes, can spread	No

What is a plantar wart?

A plantar wart is a small, rough skin growth on the sole or heel of the foot caused by infection with the human papillomavirus (HPV). The virus enters through tiny breaks in the skin and causes the surface cells to thicken into a wart. Because the wart sits on a weight-bearing area, it grows inwards rather than outwards, which is why it can hurt when you stand or walk.

Plantar warts are extremely common, particularly in children, teenagers and young adults. In Singapore, they are frequently picked up at public pools, gym shower areas and shared changing rooms, where the virus survives on warm, damp floors. They are not dangerous, and in many people they eventually clear on their own, although this can take months or even longer.

Symptoms and signs

A plantar wart typically shows the following features:

A small, rough, grainy growth on the sole, heel or ball of the foot.
Tiny black dots within the wart, which are clotted small blood vessels.
Pain or tenderness when walking or standing, especially when the wart is squeezed from the sides.
A hardened, thickened area of skin over or around the wart.
An interruption of the normal skin lines (fingerprint-like ridges) on the sole.
Sometimes several warts clustered together, called a mosaic wart.

Unlike a corn or callus, a plantar wart is contagious and can spread to other parts of the foot or to other people.

Causes and risk factors

Plantar warts are caused by certain strains of HPV that thrive in warm, moist environments. The virus spreads through direct contact or by touching contaminated surfaces. Factors that raise your risk include:

Walking barefoot in communal areas such as swimming pools, gyms, showers and changing rooms.
Small cuts or breaks in the skin of the feet that let the virus in.
Sweaty feet and damp footwear, which suit the virus.
Being a child or teenager, as warts are more common in younger people.
A weakened immune system, which makes warts more persistent.

Sharing towels, socks or footwear can also spread the virus from one person to another.

How it is diagnosed

A doctor or dermatologist can usually diagnose a plantar wart simply by examining the foot. They will look for the characteristic rough surface, the tiny black dots and the way the wart interrupts the skin lines, which helps distinguish it from a corn or callus.

Occasionally, the doctor may gently pare away the surface with a blade to confirm the diagnosis, as plantar warts often bleed in tiny points when the top layer is removed. Tests are rarely needed. If a lesion looks unusual, does not respond to treatment, or there is any doubt about the diagnosis, a small skin biopsy may be taken to rule out other skin growths.

Treatment options

Many plantar warts eventually clear without treatment, but treatment can speed things up and relieve pain. Common options include:

Salicylic acid: over-the-counter gels, plasters or paints applied daily over several weeks to gradually peel away the wart.
Cryotherapy: freezing the wart with liquid nitrogen, usually in a clinic, often over several sessions.
Other clinic treatments: such as cantharidin application, minor procedures, or laser therapy for stubborn warts.
Combination approaches for warts that resist single treatments.

Treatment of plantar warts often takes patience, as recurrence is common and several sessions may be needed. To avoid spreading the virus, keep the area covered, do not share towels or footwear, and avoid scratching or picking. There is no single fixed price, as cost depends on the treatment method and number of sessions.

When to see a doctor & which specialist

You can often manage a simple plantar wart at home, but see a doctor if:

The wart is painful and interfering with walking.
It is spreading, multiplying or not improving after weeks of home treatment.
You are unsure whether it is a wart, a corn or something else.
The lesion bleeds, changes colour, or looks unusual.
You have diabetes, poor circulation or a weakened immune system – do not self-treat foot lesions, as foot problems can become serious.

Plantar warts are not a medical emergency, but any rapidly changing or unusual skin growth should be assessed rather than ignored.

A GP can treat most plantar warts. For warts that are stubborn, recurrent, painful or uncertain, a dermatologist can offer cryotherapy, laser and other treatments and confirm the diagnosis. See our directory of dermatologists in Singapore to find one.

Related guides

Best Dermatology Clinics in Singapore — our editorial shortlist
dermatology clinics directory
Phlegm & mucus
Mycoplasma pneumonia
Eye twitching
Skin tags
Blisters

Sources

Last updated 23 June 2026. Prices are typical market ranges gathered from the cited sources and vary by clinic, doctor and individual case — they are not quotes. This guide is general information, not medical advice; always consult a qualified, MOH-accredited doctor before any treatment.

Part of our Skin health guides · Browse all health topics