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Health condition · Clinically reviewed

Ingrown toenail, Heifetz staging, conservative care - and when phenolisation ends the cycle.

One of the commonest foot problems seen in UK podiatry - and one of the most rewarding to fix well. A stepped approach beats another round of soaks that never quite work.

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Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE, BAD and specialist podiatry sources you can see at the end.

  • 03

    Current for 2026

    Reflects modern UK practice including partial nail avulsion with phenolisation as the definitive procedure.

Key facts

Ingrown toenail at a glance.

The essentials, in plain English - what it is, how it is staged, and how it is treated in the UK today.

  • What it is

    Onychocryptosis - the edge of the nail plate grows into the surrounding skin fold, causing inflammation, infection and granulation.

  • Where it happens

    Almost always the great toe (hallux), most often on the lateral border - one of the commonest foot problems seen in UK podiatry.

  • Heifetz staging

    Stage 1 - inflammation and swelling. Stage 2 - drainage and infection. Stage 3 - chronic granulation and hypertrophy of the nail fold.

  • Main triggers

    Rounded nail cutting, tight footwear, trauma, hyperhidrosis, fungal nails and biomechanical factors such as bunions.

  • First-line care

    Warm saltwater soaks, straight nail cutting, wider toe box shoes and specialist podiatry review for lifting or packing techniques.

  • Definitive treatment

    Partial nail avulsion with phenolisation - a short, well-tolerated procedure with a recurrence rate under 5 per cent.

Why this guide matters

A staged plan, not another round of soaks.

Ingrown toenails are common, painful and highly treatable - but they respond to different things at different stages. The three points below shape everything else on this page.

  • Stage decides the plan

    Heifetz Stage 1 responds to soaks, cotton wisps and straight cutting - Stages 2 and 3 usually need antibiotics or a definitive nail procedure.

  • Antibiotics are for cellulitis

    Redness and pain alone do not need antibiotics - purulent discharge, spreading redness or fever do. Overuse just drives resistance.

  • Phenolisation ends recurrence

    Partial nail avulsion with phenol is a short procedure under local anaesthetic - recurrence rates under 5 per cent and worth asking about early.

How the diagnosis is made

From sore toe to a clear plan.

The steps a UK GP or podiatrist will normally follow, in order - so you know what to expect and why.

  1. 01

    Assessing

    Focused history

    Nail-cutting habits, footwear, previous episodes, diabetes, circulation and any bleeding or pus - all shape what happens next.

  2. 02

    Assessing

    Clinical examination

    Redness, swelling and tenderness of the nail fold, granulation tissue, discharge and any hypertrophic overgrowth.

  3. 03

    Assessing

    Heifetz stage

    A simple three-stage grade that maps directly onto treatment - conservative, antibiotic, or surgical.

  4. 04

    Confirming

    Microbiology if infected

    A swab if there is purulent discharge, spreading cellulitis or a poor response to first antibiotics.

  5. 05

    Confirming

    Screen for contributors

    Fungal nail (onychomycosis), hallux valgus and sweaty feet all make recurrence more likely and deserve their own plan.

  6. 06

    Preparing

    Specialist podiatry referral

    Recurrent, chronic or Stage 2 to 3 disease belongs with a podiatrist for a definitive nail procedure under local anaesthetic.

  7. 07

    Preparing

    Vascular and diabetes review

    If diabetic or with impaired circulation, an assessment of pulses and sensation guides safe nail surgery and healing expectations.

Typical timeline: a first visit to a settled plan in days, not weeks.

Symptoms

What an ingrown toenail actually looks like.

The classic mix of nail-fold pain, redness, discharge and - if left - granulation tissue. And the features that mean it is time to seek same-day care.

  • Nail-fold pain

    A sharp, throbbing pain along the side of the great toe - worse with pressure from shoes or walking.

  • Redness and swelling

    The lateral skin fold becomes red, warm and swollen - the classic Stage 1 picture.

  • Drainage and pus

    Yellow or green discharge signals secondary bacterial infection and Stage 2 disease.

  • Granulation tissue

    Beefy, bleeding red tissue proud of the nail fold - a hallmark of chronic Stage 3 disease.

  • Fold hypertrophy

    Long-standing inflammation thickens the surrounding skin, wrapping over the nail edge and trapping it further.

  • Odour

    A distinctive smell from mixed bacterial colonisation - common when drainage has been present for weeks.

  • Limping and altered gait

    People shift weight off the toe - which can trigger knee, hip or back discomfort within days.

  • Red flag - spreading cellulitis

    Rapidly spreading redness, streaking up the foot, fever or a rising pulse - urgent care, not a podiatry booking.

Treatment

How ingrown toenails are treated in the UK.

Conservative care and better nail-cutting first, antibiotics for cellulitis, and partial nail avulsion with phenolisation for recurrent or chronic disease.

  • Warm saltwater soaks

    Ten minutes, twice daily - reduces swelling and softens the nail fold for gentle lifting. First-line for Stage 1.

  • Cotton wisp or dental floss

    A specialist podiatrist can lift the nail edge free of the fold with a small wisp - a simple, effective Stage 1 manoeuvre.

  • Straight nail cutting

    Cut across the top, level with the tip of the toe - never curved down the sides. The single biggest recurrence prevention step.

  • Wider toe box footwear

    Trainers or shoes with room across the forefoot take pressure off the nail fold and let inflammation settle.

  • Oral flucloxacillin

    If cellulitis is present - a short course, typically 7 days. Clarithromycin if penicillin-allergic. Not needed for simple inflammation.

  • Topical antifungal

    When onychomycosis is contributing - amorolfine or terbinafine - alongside the podiatry plan to reduce recurrence.

  • Partial nail avulsion with phenol

    The definitive UK procedure. Under local anaesthetic, the offending nail edge is removed and the matrix chemically ablated. Recurrence under 5 per cent.

  • Wedge, Zadik or Winograd

    Specialist alternatives when phenolisation is not suitable - excise the nail edge and part of the germinal matrix surgically.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and specialist society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or podiatrist knows your feet and history and can tell you which parts apply to you. If in doubt, get seen.

  • NICE Clinical Knowledge Summary. Ingrowing toenail.

  • British Association of Dermatologists (BAD). Patient information leaflet - ingrown toenail.

  • College of Podiatry (Royal College of Podiatry). Standards for nail surgery.

  • Cochrane Review. Surgical treatments for ingrowing toenails.

Red flags

When an ingrown toenail needs urgent attention.

Most ingrown toenails are manageable in primary care and podiatry. These are the situations that are not - and where a specialist opinion is needed.

  • Spreading cellulitis

    Redness advancing up the foot, streaking, fever or systemic upset - needs same-day medical review and intravenous antibiotics if severe.

  • Diabetes with a red or discharging toe

    Any infected toe in a person with diabetes is urgent - the risk of osteomyelitis and ulceration is much higher.

  • Peripheral arterial disease

    Cold, pale or pulseless feet - vascular assessment before any nail surgery to avoid poor healing.

  • Immunosuppression

    Chemotherapy, biologics or high-dose steroids raise infection risk - lower the threshold for antibiotics and specialist review.

  • Recurrent disease

    Two or more episodes on the same toe - stop cycling through soaks and consider a definitive nail procedure.

  • Osteomyelitis suspicion

    Deep bone pain, non-healing ulcer or exposed bone - imaging and hospital-based care, not primary care alone.

  • Paediatric presentation

    Ingrown toenails in children usually respond to conservative care - avoid overzealous surgery in the very young.

  • Melanoma of the nail bed

    A pigmented streak, non-healing ulcer or unusual granulation warrants a dermatology opinion to exclude a rare but serious mimic.

  • Pyogenic granuloma

    Rapidly growing, bleeding fleshy tissue can mimic simple granulation - a specialist should confirm.

Living with it

A treatable condition, with a clear ladder.

Four things that make the biggest difference day to day - the way you cut your nails, the shoes you choose, foot hygiene and knowing when to step up.

A quiet reminder

Small habits, kept up, prevent most recurrences.

Straight cutting, roomy shoes and dry feet - unglamorous, but they do more work than any single product on a bathroom shelf.

  1. 01 Cutting

    Cut straight, not round

    Nails should end level with the tip of the toe - never rounded down at the corners. This single habit prevents most recurrences.

  2. 02 Footwear

    Room across the forefoot

    Wide toe box shoes and breathable materials keep pressure off the nail fold and reduce moisture.

  3. 03 Hygiene

    Dry, clean, checked

    Dry between the toes after washing, treat fungal nails early, and check the great toes weekly if you have had an episode before.

  4. 04 Escalate

    Do not tolerate recurrence

    If it keeps coming back, ask about partial nail avulsion with phenol - a short procedure that ends the cycle for most people.

Frequently asked

Everything we get asked about ingrown toenails.

Quick answers on infection, home care, phenolisation and prevention.

  • What causes an ingrown toenail?

    The nail plate is pushed into the surrounding skin fold, which becomes inflamed and infected. The commonest triggers are cutting nails in a curved shape, wearing tight or narrow shoes, direct trauma, sweaty feet, fungal nails and biomechanical issues such as bunions.

  • How do I know if it is infected?

    Infection is likely if there is yellow or green discharge, a bad smell, worsening pain, spreading redness or fever. Simple inflammation - redness, warmth and swelling without pus - often settles with soaks and better nail-cutting alone.

  • Should I dig the corner out myself?

    No. Home surgery usually pushes the spike of nail deeper into the fold and introduces infection. Warm saltwater soaks, gentle lifting with a cotton wisp and a specialist podiatry appointment are far safer.

  • What is partial nail avulsion with phenol?

    A short procedure done under local anaesthetic. A thin strip of the offending nail edge is removed and phenol is applied to the matrix so that part of the nail cannot regrow. Recurrence rates are under 5 per cent and most people return to normal shoes within a few days.

  • Will the nail look normal afterwards?

    A partial procedure leaves a slightly narrower nail - most people find the cosmetic result very acceptable, especially compared with months of recurrent pain. Full regrowth is deliberately prevented on the treated side to stop the problem coming back.

  • How can I stop ingrown toenails coming back?

    Cut nails straight across, level with the tip of the toe. Wear shoes with a roomy toe box. Keep feet dry, treat fungal nails, and ask a podiatrist for a personal plan if you have had more than one episode - a definitive procedure is often the kindest long-term answer.

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