Reviewed by Evan Lewis, PhD. Last updated 11 August 2026.
A wart on the foot feels firm and rough to touch, and painful to stand on. NHS describes a verruca as feeling like standing on a needle. Pressing it from the sides usually hurts more than pressing straight down, which is the difference most people notice first.
That side-pressure detail is the single most useful thing on this page, because it is what separates a wart from the callus or corn sitting next to it.
What does a wart on your foot feel like day to day?
Like a small stone in your shoe that never falls out. NHS says warts feel firm and rough, that they are not harmful, and that some people find them itchy, painful or embarrassing. Verrucas, the ones on the sole, are more likely to be painful than warts elsewhere.
The feeling is usually worst under load. Standing, walking on a hard floor and running are when people notice it. Sitting with your foot up, you can forget it is there.
DermNet is more specific about why. The tender, inward-growing type on the sole is called myrmecia and is caused by HPV type 1. The clusters of superficial, less painful mosaic warts are usually HPV type 2. Same virus family, two very different experiences underfoot.
Why does it hurt more from the side?
Because of what the wart is made of and where it sits. DermNet describes myrmecial warts as typically tender with both lateral and direct pressure, sitting inside yellow hyperkeratotic callus-like skin with accentuated skin markings, and with the skin lines interrupted through the wart itself.
A callus, by contrast, is a flat pad of thickened skin. Press straight down on a callus and it feels like a thick bit of skin. Squeeze it from the sides and nothing much happens. Squeeze a wart from the sides and it is sharp.
That is the whole basis of the pinch test, and how to do the pinch test properly walks through it step by step.
| What you feel | What it usually points to |
|---|---|
| Sharp when squeezed from the sides, duller straight down | Plantar wart, myrmecia type |
| Sore straight down, nothing when squeezed sideways | Corn, with the pressure point in the centre |
| No pain at all, just thick and firm | Callus |
| Sharp, localised, and it appeared in one day | Foreign body such as a splinter or glass, worth having looked at |
| Widespread, mildly rough, barely tender | Mosaic warts, the HPV 2 pattern DermNet calls superficial and less painful |
If the table has not settled it, the longer comparison of plantar wart, corn and callus has photos of what each surface looks like.
What are the black dots you can feel under the surface?
They are blood vessels, not dirt and not seeds. DermNet is direct about this. The tiny red or black dots visible in a wart are papillary capillaries. NHS says the same for verrucas, describing tiny black dots under the hard skin.
You cannot really feel them as separate things. What you can feel is that filing the top layer down eventually reaches a point where it stings and pinpricks of blood appear. That is those capillaries, and it is the reason a wart bleeds in tiny spots while a callus files down evenly and dry.
Does every plantar wart hurt?
No. Mosaic warts are described by DermNet as superficial and less painful, and plenty of people find one by accident while cutting their toenails. Pain depends on the type, the depth, and whether it sits on a weight-bearing part of the foot.
A wart under the ball of the foot or the heel gets stood on with every step. The same wart on the arch, which barely touches the ground, can go unnoticed for a year. DermNet notes the incubation period can be as long as twelve months, so the wart may have been forming long before you felt anything.
Can a wart on the foot change how you walk?
Yes, and DermNet lists this among the complications. Pain from myrmecia-type plantar warts interferes with walking and sporting activities, and can cause knee or hip pain as a result.
That happens because you unconsciously roll off the outside of the foot to avoid the sore spot. Do it for a few weeks and the compensating joints start complaining. If your knee or hip has started aching and there is a sore spot on the sole, they are worth connecting.
What does it feel like when a wart is going?
Less sharp, and flatter. As the wart thins, the pressure sensation goes before the surface fully normalises, and the interrupted skin lines start to run through again. Skin lines returning is a better sign than colour.
Do not expect it to be quick. AAD says that without treatment it takes from a few months to years for warts to clear, and NHS says the same, that they usually go away on their own but may take months or even years.
Treatment shortens that, but not dramatically. The Cochrane review of topical wart treatments concluded that the evidence is most consistent for salicylic acid and even then shows only a modest therapeutic effect, that cryotherapy versus placebo showed no significant difference overall, and that two trials of clear duct tape showed no advantage over placebo.
What makes it feel worse
- Thin-soled shoes. The sole of the shoe is doing the cushioning the wart is not.
- Filing too aggressively. You reach the capillaries, it bleeds, and it is sorer for days.
- Barefoot on hard floors, especially first thing in the morning.
- Letting the surrounding callus build up. DermNet describes the wart sitting inside callus-like skin, and that ring of hard skin concentrates the pressure.
- Damp skin. NHS notes you are more likely to spread a wart or verruca if your skin is wet or damaged.
That last point is why the hygiene half matters even while you wait it out. NHS advice is to change socks daily if you have a verruca, cover it with a plaster when swimming, not to share towels, flannels, socks or shoes, and not to walk barefoot in public places. Sole Shield is the two-ingredient iodine and water spray we make for the skin of the foot and the inside of shoes, and it sits alongside that advice rather than replacing it.
Common questions
Why does my wart burn or sting?
Usually because the surface has been filed or picked down close to the papillary capillaries DermNet describes, or because a salicylic acid treatment is working on the surrounding skin. A burning sensation that arrives with spreading redness and heat is different and should be looked at.
Are plantar warts itchy?
They can be. NHS lists itchy among the things people report alongside painful and embarrassing. Itch is more common in warts elsewhere on the skin than in the deep myrmecia type on the sole, which tends to be tender rather than itchy.
Do plantar warts have roots?
No. There is nothing anchoring them into deeper tissue. DermNet describes infection beginning in the basal layer of the epidermis and causing the skin cells to proliferate, so what feels like a root is thickened skin growing inward under pressure from standing on it.
What does it mean if my wart turned black?
Often that small blood vessels inside it have clotted, which can happen as a wart resolves or after treatment. It is not a reliable sign on its own. NHS says to see a GP about any wart that bleeds or changes in how it looks, and that is the safer route.
Why did my wart bleed when I filed it?
Because you reached the capillaries. The dots DermNet identifies as papillary capillaries sit just under the keratin surface, so filing past the hard layer produces pinpoint bleeding. It is a sign to stop filing for a few days, and it is also how a wart is spread to other skin.
Can a wart on the foot be flat and not raised?
Yes, and on the sole that is normal. Weight-bearing flattens it into the skin rather than letting it grow outward, which is why plantar warts feel inward and look flat while a wart on a finger looks like a lump.
Does a plantar wart grow inwards?
It looks that way but it is really being pressed in. DermNet calls myrmecia inwardly growing, and the pressure of standing keeps the surface flush with the skin while the bulk sits below.
Can a plantar wart feel like a splinter?
Very much so, and that is a common first assumption. The difference is that a splinter arrives in a day and hurts in one exact spot, while a wart builds over weeks and hurts most when squeezed from the sides.
How long will it feel like this?
Months, sometimes longer. NHS says warts and verrucas usually go away on their own but may take months or even years, and AAD gives the same range for untreated warts. Pain usually settles before the wart is fully gone.
The bottom line
A wart on the foot feels firm and rough, sore under load, and sharp when squeezed from the sides. NHS compares it to standing on a needle. The black dots are capillaries, not seeds, and there are no roots. Sharpness from the sides points to a wart, sore straight down points to a corn, and no pain at all points to a callus. Get it looked at if it bleeds, changes appearance, or is very large or very painful.
