Ingrown Toenails: Causes, Home Care and Nail Surgery

What an ingrown toenail actually is

An ingrown toenail — clinically, onychocryptosis — occurs when a corner or edge of the nail plate pierces the adjacent skin fold, known as the sulcus. It most commonly affects the great toe. As that edge keeps pressing into the skin, the toe becomes tender, red and swollen, and the area can weep or become infected if it is left to worsen.

The key thing to understand is that the problem is mechanical: a piece of nail is growing where skin is, and the body treats it as it would any foreign object. That is why the discomfort tends to build rather than fade — and why picking or digging at it usually makes things worse rather than better.

Why ingrown toenails happen

Several everyday things push a nail towards growing in. The most common are:

• Cutting the nails too short, or rounding them down into the corners rather than straight across.
• Tight, narrow or pointed footwear that squeezes the toes together.
• Stubbing, kicking or repetitive trauma to the toe — common in running and racquet sports.
• A naturally curved, fan-shaped or involuted nail shape, which is often inherited.
• Sweaty feet, which soften the skin of the nail folds and make them easier for an edge to pierce.

Recognising the cause matters, because relieving the immediate pain without changing what is driving it often just sets up the next flare.

Safe home care — and what to avoid

For a mild, early ingrown nail that is not infected, the NHS describes simple self-care that can help: soaking the foot in warm salt water, keeping the toe clean and dressed, and switching to roomier, softer footwear to take the pressure off. Simple pain relief can make the toe more comfortable while it settles.

Just as important is what not to do. Do not try to dig the nail out or cut down the side to remove the offending spike — this tends to leave a sharper edge and a higher chance of infection. And avoid over-the-counter acid corn or wart plasters near the toe: they can burn healthy skin and are unsafe if you have diabetes or reduced circulation. If the toe is not improving within a few days, or it keeps coming back, home care has done its job of ruling out the mildest cases — the next step is a professional assessment.

When to see a podiatrist

Book an appointment if the pain persists, the nail keeps becoming ingrown, or you see signs of infection: spreading redness, throbbing pain, pus, a foul smell, red streaks tracking up the foot, or feeling feverish. Any of these warrant same-day care rather than waiting.

There is one group for whom the advice is simpler still: anyone with diabetes, peripheral arterial disease or neuropathy should treat any inflamed or painful toe as urgent and see a podiatrist or GP promptly, without attempting self-treatment. Reduced sensation and circulation change how quickly a small problem can become a serious one.

How a podiatrist treats an ingrown toenail

The first appointment is about getting the diagnosis right. Our HCPC-registered podiatrists confirm whether the nail is genuinely ingrown or simply inflamed, check your circulation and medical history, and then decide between conservative care and surgery.

For many people, conservative treatment is enough: carefully removing the offending spike of nail, dressing the toe, and advising on footwear and correct cutting technique. This relieves the immediate pain. The limitation is that the nail can grow back the same way, so where a nail keeps returning to trouble, a more definitive approach is worth considering.

Nail surgery: a permanent fix for recurrent nails

For nails that are recurrent, severely ingrown or infected, nail surgery is the established long-term solution — and NICE guidance supports it where conservative measures have not worked. It is a minor procedure carried out under local anaesthetic, so the toe is fully numbed first and the procedure itself is not painful.

Most often the podiatrist performs a partial nail avulsion: only the problem edge of nail is removed, rather than the whole nail. Phenol is then usually applied to that part of the nail matrix to chemically discourage it regrowing, which is what makes a return in the treated section uncommon. A total nail avulsion is reserved for nails damaged across their full width.

Suitability is never assumed. Because circulation and certain conditions affect healing, every case starts with a vascular and medical check — including diabetes, peripheral arterial disease, anaesthetic allergies and any blood-thinning medication. Afterwards, the toe is dressed, you receive written aftercare, and a redressing appointment is arranged within a few days. Full healing typically takes a few weeks.

Keeping it from coming back

Whether your nail settles with conservative care or surgery, the habits that prevent recurrence are the same: cut the nails straight across rather than curving down into the corners, choose footwear with room for the toes, and treat any early tenderness before it builds. Regular professional nail care can help keep borderline nails comfortable.

If you have diabetes or circulation concerns, a routine of professional foot care is the safest way to manage nails and skin — self-treatment carries real risks. Whatever the cause, the goal is the same: an accurate diagnosis, a clear plan, and a toe you can walk on comfortably again.