How to treat fungal nail infection

Understanding fungal nail infections

Fungal nail infections develop slowly and have specific characteristics. Knowing what is happening helps you understand the treatment options.

How infections develop

Fungal infections start at the nail edge and spread inward over months. The fungi (usually dermatophytes, sometimes yeasts) feed on keratin in the nail. The infection typically starts at the corner or end of the nail and gradually involves more of the nail. Treatment becomes harder the more established the infection is.

Common symptoms

Yellow, brown or white discolouration of the nail. Thickened or crumbly texture. Distorted shape. Sometimes loose or separated from the nail bed. Sometimes mild discomfort but often no pain. The visual changes are usually the main concern.

Toenails more common than fingernails

Toenails account for most fungal nail infections. The warm moist environment in shoes favours fungal growth. Fingernails get fungal infections too but less commonly. Hand washing and exposure to air make fingernails less hospitable to fungal growth.

Risk factors

Age (more common with increasing age), diabetes, immune system conditions, poor circulation, frequent communal showers, sports producing foot trauma all increase risk. Athletes get fungal nail infections frequently due to combined moisture, trauma and communal facilities. Underlying health conditions affect both risk and treatment difficulty.

The available options

Several treatments exist with varying effectiveness and effort levels.

Topical antifungal lacquers

Prescription and over the counter antifungal nail lacquers (amorolfine, ciclopirox) painted on affected nails. Clearance rates of 5 to 17 percent depending on the product and study. Treatment takes 6 to 12 months of daily application. Better for mild infections than severe ones. Requires significant patience and consistency.

Oral antifungal medications

Prescription medications (terbinafine, itraconazole) taken for 6 to 12 weeks for toenails, 6 weeks for fingernails. Clearance rates 50 to 80 percent. More effective than topicals but with potential side effects including liver issues. Requires GP prescription and monitoring. The most effective standard treatment.

Laser treatment

Private clinics offer laser treatment for fungal nails. The evidence is mixed with some studies showing benefit and others showing little effect. Cost is significant (often £200 to £800 for course of treatment). Generally not available on the NHS. May suit users who cannot take oral medications.

Nail removal

In severe cases the nail may be removed (surgically or chemically) to allow direct treatment of the nail bed. Reserved for cases that fail other treatments or are very severe. Performed by a podiatrist or GP. The nail grows back over 12 to 18 months. Significant intervention but sometimes necessary.

Home remedies and time wasters

Several popular home remedies have little evidence behind them. Knowing what does not work helps you avoid wasting time on ineffective treatments while the infection worsens.

Vinegar soaks

Apple cider vinegar soaks circulate online as a fungal nail treatment. Limited evidence supports any meaningful effect. May help slightly for very mild surface infections. Will not address established infections involving most of the nail. Often used as the sole treatment when actually addressing the infection requires more.

Tea tree oil

Tea tree oil has some antifungal properties but the evidence for treating established nail infections is weak. May provide modest benefit for very early surface infections. Will not penetrate established infections effectively. Useful as adjunctive treatment alongside conventional treatment rather than as sole treatment.

Vicks VapoRub

The ingredients in VapoRub have antifungal properties and some users report improvement. Limited scientific evidence. May help for mild infections in patient users with months of consistent application. Will not address severe infections quickly. The cheap option for users not wanting to commit to more aggressive treatment.

Just ignoring it

Fungal nail infections rarely clear on their own. Untreated infections typically spread to involve more nails. Spreading from toenails to other parts of the foot (athletes foot) commonly happens. The infection becomes harder to treat the more established it becomes. Earlier intervention produces better results.

Getting medical help

Several situations make GP consultation important. Knowing when matters for getting effective treatment.

See a GP when home treatment fails

If 3 months of consistent topical treatment produces no visible improvement, professional medical assessment is warranted. Oral antifungal medications often succeed where topicals fail. GP prescription is necessary for these. Continued ineffective home treatment is just wasted time.

See a GP if you have diabetes

Diabetes complicates fungal nail infections significantly. Reduced circulation and immune function make infections more dangerous. Foot complications from diabetes can be serious. Always involve your GP if you have diabetes and suspect a fungal nail infection. Self treatment is not appropriate for diabetic foot issues.

See a GP for severe infections

Significantly distorted nails, pain, multiple infected nails or rapid spread all warrant GP attention. Severe infections rarely resolve with topical or home treatment. Oral medications or nail removal may be necessary. The earlier the intervention for severe cases, the better the outcome.

See a GP if you are unsure

Not all nail discolouration is fungal infection. Psoriasis, trauma, other conditions can mimic fungal infection. Correct diagnosis matters for correct treatment. A GP can examine the nail and take samples for laboratory confirmation. Treating the wrong condition wastes time and money.

More nails reading

For yellow toenails specifically, our Why Is My Toenail Yellow covers the related symptom. What Causes Ridges in Nails covers another texture issue. And How Long Do Nails Take to Grow covers the timeline for new nail growth.