Why Are My Toenails Black? Here’s What Could Be Going On

Spotting a black toenail can be alarming, but it’s not always a cause for panic. The color change could be from something as simple as a bruise or as serious as an infection. Let’s go through the most common causes and when you should see a professional.

 

1. Trauma or Injury

Dropping something heavy on your toe, stubbing it hard, or wearing tight shoes can cause blood to collect under the nail, turning it black.

Solution: Rest, ice, and wear roomy shoes until it heals.

 

2. Runner’s Toe

Repetitive pressure from running or sports can cause the nail to bruise and darken.

Solution: Make sure your shoes fit properly and trim your nails to reduce friction.

3. Fungal Infections

Certain fungi can cause dark discoloration, especially if left untreated.

Solution: Use antifungal treatments early and keep your feet dry and clean.

4. Underlying Health Issues

In rare cases, black nails could be linked to conditions like melanoma or other systemic issues.

Solution: If a black nail appears suddenly without injury or doesn’t grow out, see a doctor right away.

5. Old Blood or Bruising

As a bruise under the nail grows out, it can turn dark before eventually clearing.

Solution: Be patient, keep the nail trimmed, and protect it from further damage.

So Icy Nailz Tip:

Protect your toenails by keeping them trimmed, wearing shoes that fit well, and moisturizing daily. If you notice sudden changes in nail color without an obvious reason, get it checked—your toes deserve that level of care.