What Is Causing My Black Toenail?


When you injured your foot a couple of weeks back, you didn’t immediately think much of it. Sure, it throbbed for a while and it was a bit swollen, but for the most part the pain subsided and you were back to your everyday routine. Everything seemed fine until you took off your shoe today and noticed that your toenail was black. Not only was it shocking, but your mind started to race. Why is my toenail black? Will it be okay? What should I do? After some frantic Googling, you find our blog on the 6 most common reasons why your toenail has turned black.

Repeated Trauma Over Time

If you wear shoes that do not fit properly, then you put yourself at risk of getting black toenails as well as other problems. This is because shoes that do not fit correctly can cause pressure on the toes. This pressure rubs against the toes and the feet. Blisters pop up both on the foot and under the bed of the nail. Blisters found under the toenail tend to make them turn black. Sometimes the nail will grow out and go back to normal, other times it needs treatment from a podiatrist.

Traumatic Blunt Force

When you drop a heavy object on your foot, blood can pool under the toenail and cause it to turn black. This can be relieved with a pinprick from a podiatrist.

Fungal Infection

Sometimes a fungal infection can cause the nail to turn black. When there are fungus and debris trapped under the nail, you can get a black discoloration instead of the typical yellow or green coloring.

Skin Cancer

Melanoma, also known as skin cancer, causes dark patches of skin. If the patch is under the toenail it can appear black and give the nail a black look.

Your Skin Color Changed

People’s skin color can change naturally over time. If you get a darker patch under the nailbed, then it can cause your nail to look black.

You Suffer from Another Condition

Anemia, diabetes, heart disease and kidney disorders are all known to cause black toenails.

If you see that your toenail has turned black, you should consult with a podiatrist right away. This will ensure that no underlying condition or severe problem is ailing your foot. Call Achilles Foot and Ankle Surgery, PC located in Martins Ferry, Ohio and St. Clairsville, Ohio, as well as Wheeling West Virginia. There Dr. Bruce G. Blank and his highly trained, quality staff can help get to the bottom of your black toenail. Call 740-633-4188 or make an appointment online today.