What is Onychomycosis? Expert Commentary
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Daily UseDealing with discoloured, brittle, or thickened nails? It might be more than just a cosmetic concern. In this expert commentary, Amit Saha, registered Pharmacist and Head of Technical & Innovation at Flexitol, explains what onychomycosis is and why early, effective treatment is key to managing the condition.
Key Takeaways
- A Common Problem: Onychomycosis is a fungal infection that accounts for around 50% of nail disease in adults, especially in older adults.
- More Than Cosmetic: While it may seem like a minor issue, an untreated fungal nail infection can cause pain, discomfort, disfigurement, and even lead to nail loss.
- Symptoms to Watch For: Be on the lookout for white, yellow, or brown discolouration, thickening, or brittleness of the nail.
Onychomycosis (OM) refers to a fungal infection that affects the toenails or fingernails. Fungal nail infection is a common foot problem in all age groups, but especially in older adults. The infection caused by the fungi is primarily confined to the nail, but it can occasionally spread to the surrounding skin.
Onychomycosis accounts for half of all nail disorders, and it is the most common nail disease in adults. Toenails are much more likely to be infected than fingernails. Infection and inflammation in the area of the nail matrix can lead to nail disfigurement and a distorted shape of the nail.
Onychomycosis is not life-threatening, but it can cause pain, discomfort, and disfigurement and may produce serious physical and occupational limitations. While fungal nail infections are often considered a cosmetic concern, without treatment the infection may lead to pain, irritation, and even loss of the nail. If you are unsure whether you have a fungal nail infection, consult your GP or pharmacist.
Flexitol’s Fungal Nail Treatment
Designed to target mild to moderate fungal skin infections fast, Flexitol Anti-Fungal Liquid delivers effective treatment with a lightweight, easy-to-apply formula.
- Fast-Acting Relief: Helps treat fungal infections quickly, easing itching, redness and irritation while getting to the root cause.
- Targeted Antifungal Formula: Contains Tolnaftate to combat the fungus directly and prevent it from spreading or coming back.
- Lightweight & Easy to Apply: A non-greasy liquid that absorbs quickly, making it ideal for hard-to-reach areas like between toes.
For a complete breakdown of what causes nail fungus, plus expert advice on prevention and treatment, explore our comprehensive guide: The Complete Guide to Nail Fungus.
FAQs for What is Onychomycosis?
Onychomycosis is most commonly caused by a type of fungi called dermatophytes, and it is highly contagious, often spreading from one person to another in communal areas like gyms or public pools. Individuals with a compromised immune system, diabetes, or a history of nail injuries are at a higher risk, making it crucial to seek early treatment if symptoms appear.
Fungal nail infections are commonly triggered by wearing restrictive footwear and exposing your feet to hot, humid environments. You can help prevent this by keeping your feet clean and dry, and by wearing breathable shoes and socks.
Onychomycosis will rarely go away on its own and requires consistent treatment to be resolved. Without treatment, the infection can spread and cause pain, so it’s important to start a treatment plan as soon as you notice symptoms.
A fungal nail infection often begins with subtle changes, like discolouration (white, yellow, or brown) and a thickened nail. Over time, the nail may become brittle and crumbly, leading to a distorted shape, a build-up of debris underneath, or even separation from the nail bed.

