Toenail fungus: what a podologist can treat, and when you need a dermatologist

Why fungus attracts so many myths

Nail fungus has several traits that make it especially prone to myth-making. It changes slowly — a nail takes years to grow, so it's hard to know "when it started" or whether treatment is working. It looks similar to several other problems: traumatic nail discolouration, nail psoriasis, dystrophy caused by ill-fitting shoes. And finally — it's embarrassing, which means people put off a visit for a long time and experiment with home remedies instead.

Six myths — one by one

Myth 1: "Yellow nail = fungus." This is the most common misunderstanding, and it leads people to self-treat with antifungal medication for a condition that isn't fungal at all. Yellow or brown nail discolouration can result from trauma (a subungual haematoma that grows out slowly), nail psoriasis (an autoimmune condition that doesn't respond to antifungals), pressure-induced dystrophy from ill-fitting shoes, and only then — a fungal infection. The only reliable way to tell them apart is a mycological test — taking scrapings and examining them under a microscope or culturing them. Without that, treatment is guesswork.

Myth 2: "Home remedies (vinegar, tea tree oil, baking soda) are enough." This is one of the most harmful myths — not because these substances are dangerous, but because they create a false sense of progress for months while the infection advances deeper. The dermatophyte fungi that most often cause nail fungus live deep beneath the surface of the plate. Topically applied substances struggle to reach that depth — and even where they do reach the skin, the nail plate itself is a serious barrier. Home remedies can supplement professional treatment; they can't replace it.

Myth 3: "You can easily catch fungus at a beauty salon." This myth contains a grain of truth — with an important caveat. Infection is possible wherever there's contact with biological material (nail scrapings, skin flakes) and where tools aren't properly sterilised. In a podology salon that follows proper standards — using autoclave sterilisation, single-use files and attachments, and reusable tools disinfected according to sanitary protocols — the risk of transmission is minimal. Ask about procedures before your visit; a good salon will answer without hesitation.

Myth 4: "Once the nail looks good, treatment can stop." This is one of the main reasons fungus comes back. The fungus grows into the nail bed and matrix — structures that lie far deeper than what's visible. Visual improvement (new, healthy regrowth) appears faster than eradication of the pathogen. Stopping treatment too early means the infection "survives" in structures you can't see and returns — sometimes stronger and harder to treat. A dermatologist or GP decides how long treatment should last, not the nail's appearance.

Myth 5: "A podologist can cure fungus." This needs clarifying. A podologist specialises in the care and mechanical treatment of nails and feet — and plays a key role in fungus treatment, just not the role most people assume. Working on an affected nail (removing damaged layers, clearing the bed) improves how well topical treatments penetrate and reduces the pathogen load. But a podologist can't prescribe medication — neither topical prescription treatments nor the systemic ones often needed for advanced fungus. The best approach combines both: the podologist treats the nail, while a dermatologist or GP manages the pharmacotherapy.

Myth 6: "Fungus is purely a cosmetic issue." This belief leads people to delay treatment for years. Yet untreated onychomycosis can lead to secondary bacterial infections (through damaged skin around the nail), to pain when walking (when a thickened nail starts pressing into or growing into surrounding tissue), and in people with weakened immunity or diabetes — to more serious complications of the foot. In older adults, a thick, hard nail can contribute to gait problems and falls. Appearance is just one reason to deal with it.

Who does what — podologist vs dermatologist

In practice, the most effective approach combines both specialisations: a dermatologist confirms the diagnosis and chooses treatment, while a podologist regularly treats the nail to boost the effectiveness of topical therapy. If podologists and dermatologists in your area don't formally work together, nothing stops you from coordinating visits to both yourself.

When to see a podologist, and when to go straight to a dermatologist

1. 01

   First signs — start with a podologist

   Discolouration of one nail, slight thickening, no pain. A podologist will assess the nail, take a history and refer you further if needed.

2. 02

   Suspected fungus — see a dermatologist for diagnosis

   If a podologist or GP suspects a fungal infection, the next step is a mycological test and a prescription. Only a dermatologist can prescribe higher-concentration medication or systemic therapy.

3. 03

   Treatment in progress — go back to the podologist

   Regular treatment of the nail during pharmacotherapy significantly improves its effectiveness. A visit every 4–8 weeks is usually the optimal rhythm — your podologist will set this.

4. 04

   End of treatment — dermatologist follow-up

   A doctor decides when treatment ends — not how the nail looks. A repeat mycological test to confirm eradication is often necessary.

5. 05

   Prevention — keep seeing your podologist

   After successful treatment, regular podology visits (care, early detection of recurrence) offer the best protection against another episode.

What actually works — everyday prevention

Nail fungus thrives in warm, moist environments — inside a shoe for eight hours, wet flooring by a pool, sweat between the toes. Dermatophyte fungi have taken over millions of nails precisely because conditions favour them for most of the day. It's not bad luck or poor hygiene — it's the physiology of the foot and the reality of closed footwear.

• Dry feet after bathing — especially between the toes; moisture feeds the fungus
• Cotton or wool socks that wick away moisture, changed daily
• Breathable shoes and rotation — the same shoe worn every day never fully dries out
• Flip-flops in changing rooms, at the pool, in hotels — infection through the floor is real
• No nail polish during treatment — it hinders both product penetration and monitoring of regrowth
• Regular nail treatment — nails that are too long or thick are more easily damaged and harder to care for

It's also worth treating fungal skin infections on the feet (so-called interdigital fungus — the itchy, flaking skin between the toes) if you have it. Skin and nail infections feed each other — treating one without the other is an open door to recurrence.

Before you decide — what to know before your first visit

If you've been putting off a visit because it feels "embarrassing" or "not serious enough" — know that a podology salon is a judgement-free place. Podologists see feet every day, in every condition. Your nail is neither the worst nor the strangest case they've seen.

For your first visit, don't trim your nails or apply polish — the podologist needs to see the plate as it actually is. Bring the shoes you wear most often — a good specialist will assess their fit and any possible link to your nail problems.