Conditions › Fungal Nail Infection
Fungal Nail Infection – Consultant Diagnosis & Laser Treatment in London
Fungal nail infection, also known as onychomycosis, is a common condition that causes thickened, discoloured, and sometimes brittle nails. It usually affects toenails but can also involve fingernails. While often mild, infections may spread, become uncomfortable, or cause cosmetic concerns. At Skinhorizon, we provide expert diagnosis and tailored treatments to restore nail health.
Call Us Book ConsultationWhat is fungal nail infection?
Fungal nail infection, or onychomycosis, occurs when fungi invade the nail bed and nail plate. It is one of the most common nail disorders and can affect both toenails and fingernails. The condition is more frequent in toenails due to the warm, moist environment inside shoes that favours fungal growth.
Causes and risk factors
The infection is usually caused by dermatophytes (fungi that also cause athlete’s foot), but yeast and moulds can also be responsible. Risk factors include:
- Increasing age (slower nail growth and reduced immunity)
- Diabetes and circulatory problems
- Frequent use of communal showers or swimming pools
- Wearing tight, non-breathable shoes
- Previous nail trauma
- Weakened immune system
Fungal Nail Infection Symptoms
Fungal nail infection typically starts at the edge of the nail and spreads inward. Common features include:
- Yellow, brown, or white patches on the nail
- Thickened or brittle nails
- Nail crumbling or splitting
- Debris build-up under the nail
- Occasional pain or pressure when walking
Fungal Nail Infection Diagnosis
While the condition is often recognisable clinically, a dermatologist may take nail clippings for laboratory testing to confirm fungal infection and rule out other causes such as psoriasis or trauma.
Expert Fungal Nail Infection Treatment in Central London
Book a consultation in Maida Vale for medical diagnosis and diode laser treatment of fungal toenails. Clear thick, brittle, or yellow nails effectively and safely.
Call Us Book ConsultationFungal Nail Infection Treatment
Treatment depends on the severity of the infection and the patient’s health. Options include:
- Topical antifungal lacquers: Useful for mild infections affecting the nail surface.
- Oral antifungal tablets: More effective for extensive or persistent infections but require monitoring for side effects.
- Laser therapy: Targets fungi within the nail, improving clearance rates without systemic side effects.
- Supportive care: Regular trimming, thinning of nails, and antifungal sprays/powders to reduce reinfection.
Prognosis
Fungal nail infections can be stubborn and may take months to clear due to slow nail growth. With appropriate treatment, most patients achieve significant improvement, although recurrence is possible without preventative care.
Your first visit — what to expect
- Consultation: Nail and skin examination to assess infection.
- Diagnosis: Nail sample may be taken for laboratory testing.
- Treatment plan: Options tailored based on severity, health status, and lifestyle.
- Follow-up: Monitoring progress, adjusting treatment, and providing preventive advice.
Reviewed by: Dr Mohammad Ghazavi, Consultant Dermatologist
Skinhorizon Clinic, 4 Clarendon Terrace, Maida Vale, London W9 1BZ
Last reviewed: 21 August 2025
Concerned about thick, discoloured, or brittle nails? Get expert diagnosis and treatment for fungal nail infections at Skinhorizon Clinic.
Call Us Book ConsultationFungal Nail Infection FAQs
Is fungal nail infection contagious?
Yes, fungi can spread through shared shoes, socks, nail clippers, or wet communal areas such as swimming pools and showers.
Can fungal nail infection go away without treatment?
No, fungal nail infections rarely resolve on their own and usually worsen without treatment.
How long does treatment take?
Treatment duration varies from a few months to over a year, depending on nail growth and type of therapy.
Can fungal nail infection come back?
Yes, recurrence is common. Preventive measures such as foot hygiene, antifungal sprays, and regular nail care are important.
When should I see a doctor for fungal nail infection?
If you have diabetes, circulation problems, or a weakened immune system, or if the infection is painful, spreading, or persistent.