Why Are My Toenails Turning Black?

Understanding the Causes & When to Seek Help

A Short Intro

If you’ve noticed your toenails turning black, you’re not alone. This can be caused by a variety of reasons—some harmless, others more serious. Let’s break it down so you know what’s happening and what to do about it.

1. Trauma or Injury

Stubbed your toe? Worn tight shoes? A bruise under the nail (subungual hematoma) is one of the most common reasons for a black toenail.

Solution: Rest your foot, wear properly fitting shoes, and see a doctor if pain is severe or swelling occurs.

2. Fungal Infections

Some fungal infections can cause dark discoloration in nails, especially if left untreated.

Solution: Use antifungal treatments early and keep feet clean, dry, and protected in public areas.

3. Underlying Health Issues

Certain medical conditions—like diabetes, circulatory problems, or melanoma—can also cause blackening of the nail.

Solution: If you haven’t injured your toe and the discoloration is spreading, seek medical advice promptly.

4. Athlete’s Foot or Bacterial Growth

Moist, sweaty environments inside shoes can encourage bacteria that darken nails.

Solution: Rotate shoes, wear moisture-wicking socks, and disinfect footwear.

Final Word

Black toenails aren’t always cause for panic, but they’re worth paying attention to. Understanding the cause is key to treating it properly.

So Icy Nailz Tip: Keep your toenails trimmed, wear shoes that fit, and treat nail changes early to keep your toes looking flawless and healthy.