Fungal/Thickened Toenails

Understanding Fungal & Thickened Toenails

Fungal toenail infections—also known as onychomycosis—are a common condition that causes the nails to become thick, discolored, brittle, and sometimes painful. While these infections are usually not dangerous, they can be persistent, unsightly, and difficult to treat without professional care.

Left untreated, fungal infections can spread to other nails or surrounding skin and may lead to complications, especially in individuals with diabetes or weakened immune systems.

What to Look For

• Thickened toenails that are difficult to trim
• Yellow, brown, or white discoloration
• Crumbly, brittle, or ragged nail edges
• Nails that lift from the nail bed or become misshapen
• Foul odor from the affected toenail(s)
• Discomfort or pressure when wearing shoes

What Causes It?

Fungal infections are caused by dermatophytes—fungi that thrive in warm, moist environments. You can contract the fungus through direct contact with contaminated surfaces like locker room floors, public showers, or nail salons.

Tight shoes, sweaty feet, nail trauma, or having a history of athlete’s foot can increase the risk. Individuals with poor circulation, diabetes, or compromised immune systems are more susceptible to developing thick, fungal toenails.

When to Seek Help

If you notice nail discoloration, thickening, or persistent changes in your toenails, it’s a good idea to see a podiatrist. Over-the-counter antifungal treatments are often ineffective once the infection has taken hold beneath the nail. Professional care is especially important if you have diabetes or other health conditions that impact circulation or healing.

How We Diagnose and Treat It

At Premier Foot & Ankle Specialists, we examine the affected toenail(s) and may take a small sample to confirm the presence of a fungal infection. This helps us determine the best course of treatment.

Treatment options include prescription topical antifungal medications, oral antifungal pills, or debridement (trimming and thinning the nail). In stubborn or severe cases, advanced treatments such as antifungal laser therapy or nail removal may be considered. We also provide education on prevention to help keep the infection from returning.

If you're dealing with thick, discolored, or infected toenails, don’t wait for it to get worse. Schedule an appointment with Premier Foot & Ankle Specialists today and take the first step toward clearer, healthier nails.