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Discolored, thick, or crumbly toenails can make you want to hide your feet, whether you are heading to the trail, the pool, or the gym. Nail fungus is a common concern, and the right information can help you decide what to do next.

What Is Nail Fungus?

Nail fungus, also called onychomycosis, is a common infection of the nail. According to Mayo Clinic, it can affect several nails, and it is caused by various fungal organisms. It may leave nails thickened, discolored, brittle, or crumbly.

What Causes Nail Fungus?

The fungi that cause nail infections tend to thrive in warm, damp places. Nail fungus may develop from:

• Sweaty shoes and damp socks
• Walking barefoot in locker rooms, pool areas, and shared showers
• A minor injury to the nail or the skin around it
• Athlete's foot, which may spread to the nails

How Is Nail Fungus Treated?

Mayo Clinic notes that treatment for toenail fungus isn't always needed, and that the right approach depends on the severity of the infection and the type of fungus involved. A provider may prescribe antifungal drugs that are taken by mouth or applied to the nail, and the same source notes that you will not see the result of treatment until the nail grows back completely. Because some treatments may not be suitable for everyone, it may help to talk with a provider about your health history before choosing an approach.

Mayo Clinic also cautions that even if treatment is successful, nail fungus often comes back, so prevention habits matter.

How Can I Help Prevent Nail Fungus?

• Keep feet clean and dry, and change damp socks
• Rotate your shoes so they can dry out between wears
• Wear sandals or shower shoes in public wet areas
• Keep nails trimmed and clean
• Disinfect nail clippers after use

When Should I See a Provider?

You may want to consider scheduling an evaluation if your nails are changing color or thickness, if they are painful or lifting from the nail bed, or if home care has not helped. Individuals with diabetes or circulation concerns may be at higher risk for complications and should seek evaluation sooner rather than later.

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This article is intended for general informational purposes and is not a substitute for professional medical advice.

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