A corn on your toe looks like a small, round, raised bump of hardened skin, usually no bigger than a pea. The skin around it often appears irritated or slightly swollen, and the bump itself feels noticeably harder than the surrounding area. Most corns have a dense center, sometimes called a core, that you can feel when you press on it. That core is what distinguishes a corn from a simple patch of rough skin.
What your corn looks like depends on where it formed and how much moisture is in that area. There are three distinct types, and each has a different appearance.
Hard Corns
Hard corns are the most recognizable type. They form on the tops of toes or along the outer edge of the little toe, where bone pushes up against the inside of your shoe. They look like small, dense circles of yellowish or grayish thickened skin, slightly raised above the surface. The center is firm and compacted, almost waxy in texture, and pressing directly on it typically produces a sharp, focused pain.
A hard corn often sits within a broader patch of thickened skin. Think of it as a small pebble embedded in a rough spot. The edges are usually well defined, which makes them easy to spot once you know what you’re looking at.
Soft Corns
Soft corns look quite different. They form between the toes, most commonly in the space between the fourth and fifth toes, where skin stays damp from sweat. Instead of a hard, dry bump, a soft corn appears whitish or grayish and has a rubbery, sometimes macerated texture. The moisture between your toes keeps the thickened skin soft rather than letting it dry into a firm plug.
Soft corns can be surprisingly painful. They develop over the bony knobs of the toe joints, and because the toes press together with every step, the pressure is nearly constant. If you spread your toes apart and see a pale, slightly mushy-looking spot with a defined center, that’s likely a soft corn.
Seed Corns
Seed corns are the smallest variety. They look like tiny hard circles on the sole of the foot, sometimes appearing in clusters. Each one is only a few millimeters across. They can be easy to miss because of their size, but they feel like stepping on a small grain or seed, which is where the name comes from. Seed corns are less common on the toes themselves and more typical on the ball or heel of the foot.
How Corns Differ From Calluses
Corns and calluses are both areas of thickened skin caused by friction or pressure, but they don’t look the same. Corns are small, round, and have a concentrated hard center. Calluses are larger, flatter, and spread out with irregular edges. Calluses also tend to form on weight-bearing areas like the heel or ball of the foot, while corns favor the tops and sides of toes. Another practical difference: calluses are rarely painful, while corns often hurt when you press on them.
How to Tell a Corn From a Plantar Wart
This is a common point of confusion because both can show up on your feet and both involve thickened skin. The key visual difference is texture. A corn looks like a raised, hard bump surrounded by dry, flaky skin, and the skin lines (your natural fingerprint-like ridges) continue across the surface. A plantar wart has a grainy, fleshy appearance and contains tiny black dots scattered through it. Those black pinpoints are small blood vessels that have grown into the wart.
If you’re unsure which one you’re dealing with, look closely at the surface. Smooth, dense center with flaky edges points to a corn. Grainy texture with dark specks points to a wart. Warts are caused by a virus and need different treatment, so getting this distinction right matters.
What Causes Corns to Form
Your skin builds a corn as a defense mechanism. When a specific spot on your toe gets repeated friction or pressure, the skin layers thicken to protect the tissue underneath. Shoes that are too tight, too loose, or have seams that rub against a toe joint are the most common trigger. Hammertoes or other toe deformities increase your risk because the bent joint pushes up against the shoe, creating a concentrated pressure point. Going without socks, wearing high heels, or having bony feet with little natural padding all contribute.
What an Infected Corn Looks Like
An uncomplicated corn is annoying but not dangerous. It becomes a concern if the skin breaks down and bacteria get in. Signs of infection include redness that spreads beyond the corn itself, increased swelling, warmth in the surrounding skin, and any discharge, especially if it’s cloudy or has color to it. Pain that suddenly worsens or becomes throbbing rather than pressure-related is another red flag. People with diabetes or poor circulation need to take any change in a corn’s appearance seriously, since healing is slower and infection can progress quickly in those cases.
Getting Rid of a Corn
Most corns resolve once you remove the source of friction. Switching to shoes with a wider toe box, using protective pads (donut-shaped pads that surround the corn and reduce direct pressure), and wearing moisture-wicking socks all help. Over-the-counter patches containing salicylic acid gradually dissolve the thickened skin, but you need to be careful not to apply them to healthy skin around the corn.
Soaking your feet in warm water for 10 to 15 minutes softens the hardened layer enough to gently file it down with a pumice stone. Work gradually over several sessions rather than trying to remove everything at once. If a corn keeps coming back despite changing your footwear, a podiatrist can trim the thickened skin with a blade in-office (a painless procedure since the skin is dead) and evaluate whether an underlying bone alignment issue is driving the problem.