Have you ever noticed a dark, discolored toenail after an injury? It's a common problem that often leaves people asking, "Why is my toenail black?"

A black toenail can be alarming, but it's usually not a major cause for concern. However, you need to know what caused it, as it could sometimes indicate a more serious issue.

At Haro Podiatry Center, we're here to help you understand why your toenail might be black and what you can do about it. We'll discuss the common causes of black toenails and explain the available treatment options.

Let’s get started!

Black Toenail, nail fungus Haro Podiatry Center

What Causes Black Toenails?

Trauma & Injury

The most frequent cause of black toenails is trauma or injury. Stubbing your toe, dropping a heavy object on your foot, or even wearing ill-fitting shoes can lead to bleeding under the nail. This bleeding creates a dark or black appearance known as a subungual hematoma.

Initially, you may experience pain or pressure, and the nail will gradually darken as blood accumulates. In most minor cases, these black toenails resolve independently as the nail grows out.

Fungal Infections

Fungal infections also frequently cause toenail discoloration, sometimes leading to a black appearance. Fungi thrive in warm, moist environments like shoes and sweaty feet. When they infect the nail, they can cause discoloration and even a buildup of debris under the nail, making it appear black. Treating fungal infections can prevent them from spreading and causing further damage.

Melanoma

Although less common, a black toenail can sometimes signal a serious condition like melanoma, a type of skin cancer. Melanoma may present as a dark streak or spot under the nail.

If you notice any unusual changes in your nail's color or shape, seek immediate medical attention from a podiatrist or dermatologist.

Underlying Medical Conditions

In some instances, underlying medical conditions can contribute to toenail discoloration. Diseases such as diabetes, kidney disease, or circulatory problems can impact nail health, sometimes causing them to turn black.

If you have concerns about your overall health or observe other symptoms alongside a black toenail, you should consult your doctor for an evaluation.

When to See a Doctor

While some black toenails heal on their own, others need medical attention.

  • If your black toenail hurts, feels tight, or is swollen, see a podiatrist. We can help you find relief.

  • If the discoloration doesn't improve or gets worse, even without pain, get it checked out. This could signal a problem that needs attention.

  • If you have diabetes or other health issues, any toenail changes should be checked by a podiatrist right away.

If you're unsure about the cause of your black toenail, don't hesitate to ask a professional. We're here to help diagnose and treat you.

How to Get Rid of Black Toenails

The best treatment for a black toenail depends on what caused it.

Trauma-Induced Black Toenails

Most minor injuries heal on their own as the nail grows out. If there's a lot of pain or pressure from the blood under the nail, we can drain it to help you feel better.

Fungal Infections

If a fungal infection is the problem, we might suggest antifungal creams or oral medications. For stubborn or severe cases, laser therapy can be a faster, more effective option. At Haro Podiatry Center, we use advanced technology and create treatment plans to get rid of fungal infections.

Melanoma

In the rare instance where a black toenail is due to melanoma, you need early diagnosis and treatment. 

How to Keep Your Toenails Healthy

Taking care of your feet and toenails can go a long way in preventing unsightly black toenails.

Wear the Right Shoes

Ensure your shoes fit well and offer your toes ample space to move. Tight shoes can increase the risk of injury, leading to black toenails. If you need help finding the right fit, visit Haro Podiatry Center. We'll help you find comfortable, supportive shoes that keep your toes healthy.

Trim Your Nails Properly

Cut your toenails straight across, avoiding rounded corners or cutting them too short. This helps prevent painful and potentially discolored ingrown toenails.

Practice Good Foot Hygiene

Keep your feet clean and dry to prevent fungal growth. Change your socks regularly, especially if your feet tend to sweat, and use antifungal powder if necessary.

Don't Forget the Sunscreen

When you're out in the sun, remember to apply sunscreen to your feet, including your toenails. This simple step reduces the risk of melanoma and other skin damage that can affect your nail health.

Worried About Your Black Toenail? We Can Help

Remember, black toenails can have many causes, from minor injuries to underlying health issues. If you find yourself asking, "Why is my toenail black?" or if it's causing you concern, it's always best to get it checked out.

At Haro Podiatry Center in Clifton, NJ, we diagnose and treat all sorts of foot problems, including black toenails. We'll work with you to find the cause and provide the right treatment so you can get back to enjoying healthy feet. Schedule your appointment today!

Ibrahim Haro, DPM
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NJ podiatrist helping Clifton area patients with diabetic foot care, foot pain, flat feet, and neuropathy.
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