Peripheral Neuropathy and Foot Ulcers in 2026: Daily Inspection, Callus Care, and Infection Warning Signs

You step on something tiny in the kitchen, barely feel it, and keep walking. Two days later there’s a blood spot in your sock. That’s how some foot ulcers begin. Not with drama. With numbness, pressure, friction, and a problem that goes unnoticed long enough to deepen.

If you have peripheral neuropathy, the dangerous part isn’t just pain. Sometimes it’s the opposite. Reduced sensation means your foot can be injured without the usual warning signal. Once the skin breaks down, infection can move in fast.

So yes, a daily foot check sounds boring. It also prevents disasters.

Before there’s an ulcer, there’s usually a long setup

People tend to picture a foot ulcer as a crater in the skin. Usually, the buildup is much more ordinary. Dry skin cracks. A shoe keeps rubbing the same spot. A thick callus forms over a pressure point. You start walking differently because your toes are weak or your balance is off. Pressure keeps building under skin that can’t handle it.

Peripheral neuropathy changes the way your feet handle stress. You may not feel heat normally. You may not notice a blister from a new shoe or a seam digging into the side of a toe for hours. If your neuropathy is tied to diabetes, poor blood sugar control can make wound healing harder and raise infection risk. That’s the part people miss. The ulcer often isn’t the first event. It’s the result of several small problems being ignored.

A real-world example makes the pattern clear. A 62-year-old man with diabetic neuropathy notices a hard patch under the ball of his foot. It doesn’t hurt, so he assumes it’s harmless. He trims it aggressively in the bathroom with a razor blade, nicks the skin, and keeps walking on it. Because sensation is dulled, he doesn’t realize the area is turning into an open wound. By the time he gets care, there’s drainage and redness. Painfully common. And easy to understand once you understand neuropathy.

For a daily foot check, keep it plain

This does not need to turn into a 20-minute ritual.

Take off your socks and look at the entire foot once a day. Top, bottom, heel, sides, and between the toes. If you can’t see the bottom well, use a mirror or your phone camera. You’re looking for the things that are easy to miss when sensation is unreliable: a new blister, a crack in dry skin, redness over a bony area, swelling, drainage, a dark spot under a callus, or a toenail edge digging into skin.

What matters most is change. If the skin was intact yesterday and today there’s a split at the heel, that matters. If one toe suddenly looks redder than the others, that matters. If your sock is damp and you don’t know why, that matters. Don’t wait for pain to tell you whether something is serious. In neuropathy, pain may not show up on schedule.

Do the check at a time you can repeat. After a shower works for some people. Before bed works for others. The point isn’t perfection. Just consistency, enough to catch a small problem while it’s still small.

Shoes need a check too. Run your hand inside before you put them on. Feel for a pebble, a rough seam, or a folded insole. If you have neuropathy, the wrong shoe can create a wound with very little warning. Thick socks can reduce friction, but they won’t fix a bad fit.

Calluses are where a lot of people make things worse

A callus is not just dead skin when you have neuropathy. It’s often a sign of repeated pressure. And pressure under a callus can hide tissue damage underneath.

So home surgery on your own feet is a bad idea. Don’t cut calluses with blades. Don’t dig at them with scissors. Don’t use harsh chemical corn removers unless a clinician who understands your foot risk has told you exactly how to use them. Those products can damage the surrounding skin, especially if your sensation is poor and you can’t tell when irritation is getting out of hand.

A better plan is simpler: wash, dry carefully, and use moisturizer on dry skin, but not between the toes, where too much moisture can lead to breakdown. If a callus keeps coming back, that points to a pressure problem that needs attention, not just a cosmetic fix. A podiatrist is often the right doctor for callus trimming, nail care, pressure-point assessment, and shoe advice. If your neuropathy is progressing, a neurologist should also be involved, especially if the cause is still unclear or symptoms are spreading.

If the callus has a dark area underneath, starts draining, or sits over a spot that feels warmer than the surrounding skin, stop treating it like a routine rough patch. That can be an ulcer hiding in plain sight.

When you see redness or drainage, don’t sit on it

Infection does not always announce itself with fever.

A neuropathic foot wound can be infected even when pain is mild or absent. Warning signs that need to be taken seriously include increasing redness, swelling, warmth, pus or cloudy drainage, a foul odor, skin breaking down around the wound, or red streaking. If you suddenly feel generally unwell, the situation is more urgent. If the area is black, blue, or rapidly changing, it needs urgent evaluation.

This is where people lose time. They notice a little drainage and tell themselves they’ll give it a few days. Bad gamble. If there is an open sore, spreading redness, or any sign of infection, get medical care promptly. Depending on how severe it looks, that may mean your primary care doctor the same day, a podiatrist, urgent care, or the emergency department. If you already have access to a wound clinic through your health system, use it. Fast treatment matters.

Be specific when you call. Don’t just say, “My foot looks weird.” Say, “I have peripheral neuropathy and there is a new open area with redness and drainage.” That gets attention for a reason.

If your neuropathy has never been properly worked up, this should push you to deal with that too. Foot protection is immediate damage control. It does not replace figuring out why the nerves are damaged. Some causes are treatable. Some are not. But numb feet without a plan is how preventable wounds keep happening.

If you were just diagnosed, start here

Pick one time every day to inspect both feet. Switch to shoes that don’t rub. Stop walking barefoot, even at home, if sensation is reduced. Don’t carve at calluses. Don’t ignore sock stains. And don’t assume “it doesn’t hurt” means “it’s fine.”

So much of neuropathy care comes down to respecting the bad signals damaged nerves send. Your feet may not report trouble accurately. Your eyes have to do that job instead.

Sources

• Two New Medical Tests Added to MedlinePlus (MedlinePlus, 2016-10-16)