The fungal nail knowledge centre
31 independent guides on fungal nail infection — symptoms, causes, every UK treatment option compared, and how to stop it coming back. Written plainly, referenced to NHS and NICE guidance, and free of exaggerated claims. None of it is medical advice.
Not sure what you are looking at?
Answer six questions and we will point you to the guides that fit your nail. Informational only — not a diagnosis.
Understanding it
What fungal nail infection is, what causes it and how it behaves.
What is a fungal nail infection?
Onychomycosis is a fungal infection of the nail plate, nail bed or the matrix that produces the nail. It is the most common nail disorder seen in UK general practice, accounting for around half of all nail problems, and it becomes more likely with every decade of life.
3 min read
Can fungal nails spread?
Yes — slowly, but reliably. Onychomycosis is mildly contagious, and the most common route of transmission is from your own foot skin to your own nails.
2 min read
Athlete's foot vs nail fungus
They are usually caused by the same organism. Treating the nail while ignoring the skin is like bailing a boat without plugging the hole.
2 min read
Latest research summaries
Research on onychomycosis moves slowly, but a few themes are consistent across recent reviews and are worth knowing before you choose a treatment.
2 min read
What causes fungal nail infections?
Fungal nail infection — onychomycosis — affects roughly one in ten UK adults and up to half of people over 70. It is caused by microscopic fungi that feed on keratin, the protein your nails are made of.
5 min read
Fungal nail treatment FAQs
The questions our UK support team is asked most often, answered plainly.
5 min read
Symptoms
Reading the signs — colour, thickness, texture and what they mean.
Early fungal nail symptoms
Treatment is quickest when only the tip of the nail is involved, which is exactly when the signs are easiest to ignore. Knowing what the first few weeks look like is the single most useful thing you can learn about this condition.
2 min read
White spots on toenails
White marks on a toenail have three common explanations, and only one of them is an infection. Telling them apart takes about a minute.
2 min read
Yellow toenails
Yellowing is the symptom that sends most people looking for answers. It is also the least specific: several very different things turn a nail yellow.
2 min read
Thick toenails
A thickened nail is uncomfortable in shoes, difficult to cut and hard to treat, because thickness itself blocks topical treatment from reaching the infection underneath.
2 min read
Brittle and crumbling nails
Nails that split, flake or crumble away at the tip are telling you the keratin structure has been weakened — by fungus, by chemistry, or by simple dehydration.
2 min read
Nail trauma vs fungal infection
Runners, hikers and anyone who has dropped something on a toe often assume the worst. Trauma and infection look similar at a glance but behave very differently over time.
2 min read
Treatments
Every option available in the UK, compared honestly.
How long does treatment take?
There are two clocks running. One is how long it takes to deal with the infected nail. The other, much slower, is how long a healthy nail takes to grow into its place.
2 min read
Toenail removal
Removing the infected nail solves the fundamental problem with topical treatment — that medication cannot get through a thick, diseased nail plate. There are two very different ways to do it.
2 min read
Laser treatment for fungal nails
Laser is the most heavily marketed option and the least well evidenced. It is worth understanding what the studies actually show before spending several hundred pounds.
2 min read
Prescription medicines
For extensive or multi-nail infection, systemic treatment reaches the nail bed through the bloodstream. It is effective, but it is a months-long commitment with monitoring.
2 min read
Over-the-counter treatments
Pharmacy shelves offer three quite different mechanisms, and they suit different stages of infection. Matching the product to the nail matters more than the brand on the box.
2 min read
Natural remedies
Home remedies are cheap, low-risk and extremely popular. The honest position is that the evidence is thin, and none of them reliably clears an established nail infection.
2 min read
Treatment comparison
Five routes, very different profiles. This is how they compare on the things that actually decide the outcome: how long they take, what they cost, and how good the evidence is.
2 min read
Prevention
Stopping infection taking hold — and stopping it coming back.
Can fungal nails come back?
Recurrence is reported in roughly one in four to one in two cases within a few years. That statistic is less discouraging than it sounds, because most recurrences have an obvious and preventable cause.
2 min read
How to disinfect shoes
Fungal spores can persist inside footwear for months. Treating the nail while putting the same shoes back on every morning is the most common reason people end up treating twice.
2 min read
How to prevent reinfection
Prevention is a handful of small habits. Done consistently they are more effective than any product, and they cost almost nothing.
2 min read
Preventing reinfection
Reinfection is common because the environment that caused the first infection usually has not changed.
3 min read
Special situations
Children, pregnancy, diabetes and other circumstances.
Can children get fungal nails?
Onychomycosis is uncommon before puberty — under 1% of children — so a nail change in a child deserves a proper diagnosis rather than assumed self-treatment.
2 min read
Fungal nails during pregnancy
Nail changes are common in pregnancy for hormonal reasons alone. Where infection is genuinely present, treatment choices are narrower and should be made with a midwife, GP or pharmacist.
2 min read
Diabetes and fungal nails
Fungal nail infection is substantially more common in people with diabetes, and the consequences of getting it wrong are more serious. This is the one group for whom we actively recommend professional care over self-treatment.
2 min read
Using Canespro
Practical guidance for the treatment set we stock.
Before treatment checklist
Ten minutes of preparation removes most of the reasons home treatment goes slowly. Work through this list the evening before you start.
2 min read
Visual treatment guide
The whole treatment is one short routine repeated daily. Once it is habit it takes about five minutes, plus a ten-minute soak.
2 min read
How Canespro works
Canespro takes a different approach to paint-on treatments: instead of trying to penetrate a thick, infected nail, it dissolves that nail away so the infection has nowhere left to live.
4 min read
Canespro treatment timeline
Two questions come up more than any other: how long until the nail is gone, and how long until it looks normal again. They have very different answers.
4 min read
Common Canespro mistakes
The set works reliably when it is used exactly as directed. Almost every complaint of slow progress traces back to one of these.
4 min read