Fungal Nail Infection: Causes, Laser Treatments and Preventive Tips

If you're dealing with thickened, discoloured, or brittle nails, you could be suffering from a fungal nail infection—a common condition that affects millions, yet is often overlooked until it becomes unsightly or painful.

At Flawless Feet Podiatry & Laser Clinic in London, we specialise in advanced, pain-free treatments that restore the health and appearance of your nails with long-lasting results.

S30 Podylas™ Laser -Laser Fungal Nail Treatment

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Lunula “Cold" Laser -Laser Fungal Nail Treatment

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What Is a Fungal Nail Infection?

A fungal nail infection, or onychomycosis, is caused by the overgrowth of fungal organisms in, under, or on the nail. It most commonly affects toenails but can also occur in fingernails. The condition typically develops slowly, and early signs include:

  • Yellow, white, or brown discolouration
  • Thickened or brittle nails
  • Crumbly or flaky texture
  • A distorted or lifted nail shape
  • Foul odour or nail detachment in advanced stages

The infection can affect one or multiple nails and is more prevalent in adults, especially those with diabetes, weakened immune systems, or poor foot hygiene.

Why Fungal Nail Infections Shouldn’t Be Ignored

Although it may seem like a minor cosmetic concern, a fungal nail infection can spread and lead to:

  • Chronic discomfort while walking
  • Secondary skin infections like athlete’s foot
  • Permanent nail damage
  • Embarrassment or anxiety over the appearance of your feet or hands

Getting early, effective treatment from a qualified podiatrist or chiropodist in London can prevent further complications and improve your nail health

Common Causes of Fungal Nail Infection

Understanding what causes the infection can help in preventing recurrence. Risk factors include:

  • Existing fungal skin infections (e.g. athlete’s foot)
  • Nail trauma or damage from pedicures or manicures
  • Diabetes, psoriasis, or compromised circulation
  • Excessive use of nail polish or acrylic nails
  • Damp environments like communal showers, gyms, or swimming pools
  • Wearing tight, non-breathable shoes
  • Poor foot hygiene and prolonged moisture exposure

How We Treat Fungal Nail Infections at Flawless Feet

At Flawless Feet Podiatry & Laser Clinic, we offer a comprehensive approach to treating fungal nail infection using the latest technologies combined with expert podiatric care. Depending on the severity and nature of your condition, we may recommend one or more of the following options:

1. Laser Therapy – Our Leading Solution

We are proud to offer two innovative laser options:

S30 Podylas™ Laser

A state-of-the-art laser that delivers focused energy to eradicate fungal cells beneath the nail without harming surrounding tissue.

Lunula “Cold” Laser

A pain-free, low-level laser therapy (LLLT) that targets the infection while stimulating nail regeneration and immune response.

Benefits of Laser Treatment:

  • Pain-free and non-invasive
  • No side effects or liver risks (unlike oral medication)
  • Suitable for most patients
  • Proven clinical effectiveness
  • Typically completed in 4 sessions spaced two weeks apart

Learn more about fungal nail laser treatment →

2. Topical Antifungal Therapy

For mild infections, medical-grade lacquers or oils may be prescribed. We combine these with professional nail debridement to enhance penetration and maximise results.

3. Oral Antifungal Medication

While oral tablets can be effective, they may carry side effects—especially for those with liver concerns. We generally reserve this option for more advanced or resistant infections, with your health and safety as top priority.

Preventing Fungal Nail Infections

To reduce the risk of recurrence after treatment:

 Keep nails clean and dry

 Change socks daily

 Wear breathable footwear

 Avoid walking barefoot in public places

 Disinfect nail tools regularly

 Don’t share towels, shoes, or nail clippers

Frequently Asked Questions

Pricing depends on the number of nails affected and the treatment plan required. We’ll provide a full quote during your initial consultation.

Yes. Our S30 Podylas™ and Lunula Lasers are FDA-cleared and entirely safe, with no known side effects or recovery time needed.

Most patients see visible improvements after a few sessions, but full nail regrowth may take 6–12 months, depending on nail growth rate.

No need—we handle any debridement or trimming required to ensure effective treatment.

Yes, recurrence is possible without proper foot care. We offer advice on prevention and regular check-ups to maintain long-term results.

Book Your Podiatrist in London

Book your treatment at Flawless Feet Podiatry & Laser Clinic in London and experience expert care designed to relieve discomfort, restore movement, and get you back on your feet, comfortably. 

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Customer Testimonials

Millie conducted a thorough investigation incl. an ultrasound scan and offered a firm diagnosis and treatment plan in only 30 mins. Whilst I would have preferred guidance on all of the aspects of treatment, I understand the limitations of an initial care plan. Ultimately I felt very reassured by Millie's expert advice about my foot issue.

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Constanze Gilbert

My first appointment with Marta was fantastic. She was so helpful and informative. She explained what was happening with my feet, gave me treatment options and allowed me to think on them. I now have a treatment plan and know more about how to take care of my feet and what ill fitting shoes means for their health. Looking forward to my follow up appointment!

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Sadaf Khan

Very nice clinic with lovely staff. My appointment with Marta went great, as she made me feel super comfortable and gave me her recommendations on the best course of action for my issue. Super professional and very clear with communication. Looking forward to seeing her again in the future! Thank you 🙏🏼", "star_review

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Hannah Brisola

Flawless by name, flawless by nature... I had a double nail avulsion treatment for my big toes after suffering intermittently with infections. Marta was incredible, very knowledgable, professional and friendly, the aftercare was also top notch. They've now fully grown back with no issues. I would highly recommend them 100 times over... thank you Flawless Feet Podiatry & Laser Clinic.

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Bella Major

I went to Flawless feet for the first time today & left feeling utterly relieved after having a painful toe for sometime & not understanding the reason. Marta was extremely professional, knowledgeable and welcoming and I left feeling so much better and confident about looking after my feet myself at home, following Marta's suggestions after receiving the treatment. I have booked for a check up in a couple of months & will be avoiding cheap nail bar pedicures in future! Thank you Flawless Feet!

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Sara Tierney

After having tried a few others for foot treatment. Flawless were the first to fully put me at ease. Relaxed, friendly, informative and professional staff are worth their weight in gold. My only regret is not coming to them years ago.

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chris jarman

I would highly recommend Flawless Feet. I had three treatments with Millie after suffering knee pain for three years. I had received physiotherapy, acupuncture and osteopathic treatment, all of which helped but the pain and absence of the full range of motion persisted. Millie successfully treated my knee and after three sessions, assessed me as not requiring further treatment. She made recommendations for suitable trainers amd provided me with additional exercises to the ones issued by a physio. I am happily pain-free now and the full range of mobility has been restored. I would recommend Millie very highly. I was impressed that she did not suggest I needed further treatment or unnecessary assessments.

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Emma Kelly

I visited Marta yesterday with some foot concerns and she was absolutely fantastic. Friendly, reassuring, professional. The clinic was clean, welcoming and I cannot recommend them more highly.

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Robyn Cowling

I definetly recommend Flawless Feet in Sydenham. I have just finished my course of treatment and I felt totally cared for and comforted. The aftercare offered was excellent and Marta made me feel calm and in control throughout the whole procedure too.

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Chloe Graham