Normal Toenail vs Ingrown Toenail
A normal toenail ends in a straight free edge that sits on top of the skin. You can see the whole corner of the nail, and the skin beside it is the same colour as the rest of your toe. An ingrown toenail has a corner that has disappeared into the skin fold. That side gets tender first, then red and puffy. A visible corner does not rule out an ingrown nail; pain, swelling and the position of the edge also matter.
Last Updated: October 15, 2026
At a glance
| The difference | Normal Toenail | Ingrown Toenail |
|---|---|---|
| What is it? | A nail growing out over the skin | A nail growing into the skin |
| What they look like | Straight across, corners visible | Corner buried in the skin fold |
| How treatment differs | Cut it straight across | Take the pressure off the edge |
What is it?
Normal Toenail
A nail growing out over the skin
The nail plate slides forward over the nail bed and its free edge overhangs the tip of the toe. The skin folds at the sides sit alongside the nail, not on top of it.
Ingrown Toenail
A nail growing into the skin
The corner of the nail is angled down into the soft skin fold at the side. The body treats it like a splinter and swells around it.
What they look like
Normal Toenail
Straight across, corners visible
A clean straight line at the tip, with both corners clear of the skin. A little natural curve across the nail is normal.
Ingrown Toenail
Corner buried in the skin fold
The nail edge vanishes into the skin partway along. The fold may bulge up over it and look shiny.
Symptoms
Normal Toenail
No
You should not be aware of a healthy nail at all.
Ingrown Toenail
Yes, on one side only
Tender first, then sore in shoes, then throbbing. Pressing that one corner reproduces the pain exactly.
How it changes over time
Normal Toenail
Grows about a millimetre a month
A toenail takes roughly twelve to eighteen months to replace itself completely. Ridges along its length and slight thickening with age are normal.
Ingrown Toenail
Worse until the pressure changes
It will not settle on its own while the nail is still digging in. Left alone, the skin piles up over the edge and can start to weep.
How treatment differs
Normal Toenail
Cut it straight across
Trim after a shower when the nail is softer. Go straight across, no shorter than the tip of the toe, and leave the corners alone.
Ingrown Toenail
Take the pressure off the edge
Soak in warm salt water for ten to fifteen minutes a few times a day, wear open or roomy shoes, and have a clinician lift or trim the corner if it does not settle. A stubborn one is treated by numbing the toe and removing a narrow strip of nail edge.
Questions Patients Ask
How do I know if my toenail is ingrown or just normal? Look for the corner of the nail. On a normal toenail you can see both corners sitting clear of the skin, and the toe does not hurt. On an ingrown nail the corner disappears into the skin fold and that one side is tender.
What does an ingrown toenail feel like at the start? Tenderness on one side, with nothing much to see. Press along both edges of the nail — a healthy nail feels the same on both sides, while an early ingrown nail is sore on one side only.
Why do ingrown toenails keep coming back? Usually the way the nail is cut. Rounding the corners or cutting too short leaves the skin to close over the nail edge, so it grows into the skin instead of over it. Tight shoes make it more likely.
How should toenails be cut? Straight across, no shorter than the tip of the toe, with the corners left alone. Trim after a shower when the nail is softer, and file a sharp corner rather than cutting it back.
Is a curved or ridged toenail a problem? Not on its own. Lengthwise ridges are normal and become more obvious with age, and a gentle curve across the nail is normal too. It matters only when the corner presses into the skin.
Can an ingrown toenail heal on its own? An early one often settles with warm salt-water soaks and roomier shoes. Once there is pus or overgrown tissue at the edge, it needs treating — removing a narrow strip of nail edge under local anaesthetic takes a few minutes.
When should I get medical help?
Arrange medical care if self-care is not helping, the toe has pus, or you have fever or chills. If you have diabetes and an ingrown toenail, seek medical advice because foot problems can be more serious.