Have you noticed your toenails changing color, thickening, or becoming more brittle? Maybe they’ve started curling, separating from the nail bed, or developing an odd texture. While it’s tempting to ignore these changes or cover them with polish, toenail issues are often a sign that something deeper is going on beneath the surface.

At Roadrunner Foot and Ankle in Peoria, Arizona, we treat a wide variety of nail conditions—and help patients understand what their toenails are really telling them about their foot health.

Common Causes of Toenail Changes

1. Fungal Infections (Onychomycosis)
   Fungal infections are one of the most common reasons toenails become thick, yellow, or brittle. They often start small—just a white or yellow spot under the nail—but can spread quickly. Without proper treatment, toenails can lift, crumble, or even become painful.
2. Injury or Repeated Trauma
   Dropping something heavy on your toe or wearing tight shoes can cause nail discoloration or thickening. Runners and athletes often experience repetitive nail trauma that can mimic infection or cause bleeding under the nail.
3. Ingrown Toenails
   When the edge of a nail grows into the surrounding skin, it can cause pain, redness, and infection. If untreated, the area may swell or ooze.
4. Underlying Medical Conditions
   Diabetes, psoriasis, and poor circulation can all affect the health and appearance of your nails. These conditions may slow nail growth or increase the risk of infection.

Treatment Options

At Roadrunner Foot and Ankle, our podiatrists use a variety of treatment options depending on the cause. We may recommend:

• Professional nail debridement (thinning and cleaning the nail)
• Prescription topical or oral antifungal medications
• Cutera GenesisPlus™ Laser Therapy to safely treat toenail fungus
• Onyfix® Nail Correction System to reshape curved or ingrown nails without surgery

We’ll examine your toenails, determine the cause, and create a customized plan to restore healthy nail growth.

When to See a Podiatrist

If your toenails are thick, discolored, or painful—or you have diabetes—you should never try to treat the problem on your own. Early treatment can prevent long-term damage and stop infections before they spread.

Don’t let your toenails give you a fright. Call and schedule an appointment with Dr. Margaret Withrow or Dr. Dylan Kaumaya at  Roadrunner Foot and Ankle in Peoria, Arizona today for expert care that gets your nails back to healthy.